diff --git a/.vscode/launch.json b/.vscode/launch.json
new file mode 100644
index 0000000..10f2f39
--- /dev/null
+++ b/.vscode/launch.json
@@ -0,0 +1,15 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Debug Local File",
+            "type": "Ruby",
+            "request": "launch",
+            "cwd": "${workspaceRoot}",
+            "program": "${file}"
+        }
+    ]
+}
\ No newline at end of file
diff --git a/lib/binary_to_decimal.rb b/lib/binary_to_decimal.rb
index 439e8c6..30854f0 100644
--- a/lib/binary_to_decimal.rb
+++ b/lib/binary_to_decimal.rb
@@ -1,3 +1,4 @@
+require "pry"
 # A method named `binary_to_decimal` that receives as input an array of size 8.
 # The array is randomly filled with 0’s and 1’s.
 # The most significant bit is at index 0.
@@ -5,5 +6,10 @@
 # Calculate  and return the decimal value for this binary number using
 # the algorithm you devised in class.
 def binary_to_decimal(binary_array)
-  raise NotImplementedError
+  binary_array_length = binary_array.length
+  decimal = 0
+  binary_array_length.times do |i|
+    decimal += binary_array[binary_array_length - 1 - i] * 2 ** i
+  end
+  return decimal
 end