diff --git a/lib/binary_to_decimal.rb b/lib/binary_to_decimal.rb
index 439e8c6..76255c0 100644
--- a/lib/binary_to_decimal.rb
+++ b/lib/binary_to_decimal.rb
@@ -4,6 +4,14 @@
 # The least significant bit is at index 7.
 # Calculate  and return the decimal value for this binary number using
 # the algorithm you devised in class.
+require 'pry'
 def binary_to_decimal(binary_array)
+  total = 0
+  8.times do |i|
+    power = 7 - i
+    total += binary_array[i] * (2**power)
+    # binding.pry
+  end
+  return total
   raise NotImplementedError
 end