diff --git a/ride_share_stef.rb b/ride_share_stef.rb
new file mode 100644
index 0000000..faad154
--- /dev/null
+++ b/ride_share_stef.rb
@@ -0,0 +1,149 @@
+# Establish layers
+# Assign data structures to layers
+# Make the data structures
+# Total drivers earnings and rides is the ultimate goal
+
+# List out an array of hashes, starting with driver first.
+# Each hash should contain the information for each event, for each driver.
+# Utilize loops to iterate in order to add the costs together to get the grand total of earnings per driver.
+
+dr0001 = [
+    {
+      date: "Feb 2",
+      cost: 10,
+      rating: 3,
+      rider: 3
+    },
+
+    {
+      date: "Feb 3",
+      cost: 30,
+      rating: 4,
+      rider: 15
+    },
+
+    {
+      date: "Feb 5",
+      cost: 45,
+      rating: 2,
+      rider: 3
+    }
+  ]
+
+  dr0002 = [
+    {
+      date: "Feb 4",
+      cost2: 15,
+      rating: 1,
+      rider: 13
+    },
+
+    {
+      date: "Feb 3",
+      cost2: 25,
+      rating: 5,
+      rider: 73
+    },
+
+    {
+      date: "Feb 5",
+      cost2: 35,
+      rating: 3,
+      rider: 66
+    }
+  ]
+
+  dr0003 = [
+    {
+      date: "Feb 4",
+      cost3: 5,
+      rating: 5,
+      rider: 66
+    },
+
+    {
+      date: "Feb 5",
+      cost3: 50,
+      rating: 2,
+      rider: 3
+    }
+  ]
+
+  dr0004 = [
+    {
+      date4: "Feb 3",
+      cost4: 5,
+      rating: 5,
+      rider: 22
+    },
+
+    {
+      date4: "Feb 4",
+      cost4: 10,
+      rating: 4,
+      rider: 22
+    },
+
+    {
+      date4: "Feb 5",
+      cost4: 20,
+      rating: 5,
+      rider: 73
+    }
+  ]
+
+# Driver 1 earnings loop.
+    costs = []
+  dr0001.each do |money|
+    costs << money[:cost]
+  end
+
+  total = 0
+  costs.each do |cost|
+    total = total + cost
+  end
+
+# Driver 2 earnings loop.
+    costs2 = []
+  dr0002.each do |money2|
+    costs2 << money2[:cost2]
+  end
+
+  total2 = 0
+  costs2.each do |cost2|
+    total2 = total2 + cost2
+  end
+
+# Driver 3 earnings loop.
+  costs3 = []
+  dr0003.each do |money3|
+    costs3 << money3[:cost3]
+  end
+
+  total3 = 0
+  costs3.each do |cost3|
+    total3 = total3 + cost3
+  end
+
+# Driver 4 earnings loop.
+  costs4 = []
+  dr0004.each do |money4|
+    costs4 << money4[:cost4]
+  end
+
+  total4 = 0
+  costs4.each do |cost4|
+    total4 = total4 + cost4
+  end
+
+# Rides (simplest version) provided by each driver, could also use #{dr0001.length} to display this information.
+dr1_rides = dr0001.length
+dr2_rides = dr0002.length
+dr3_rides = dr0003.length
+dr4_rides = dr0004.length
+
+# Output of money made and rides for each driver.
+puts "Driver 1 has made $#{total} and given #{dr1_rides} rides."
+puts "Driver 2 has made $#{total2} and given #{dr2_rides} rides."
+puts "Driver 3 has made $#{total3} and given #{dr3_rides} rides."
+puts "Driver 4 has made $#{total4} and given #{dr4_rides} rides."