Update README.md

Author: DIL8654

README.md

@@ -33,6 +33,6 @@ Given an array of integers, return a new array such that each element at index i
 
 For example, if our input was [1, 2, 3, 4, 5], the expected output would be [120, 60, 40, 30, 24]. If our input was [3, 2, 1], the expected output would be [2, 3, 6].
 
-Follow-up: what if you can't use division? Not yet added!!
+Follow-up: what if you can't use division? see the methods calculateNewArray4 and calculateNewArray5
 
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