Problem: the units digit of ( 10 ) ^ ( 87 ) + ( 93 ) ^ ( 46 ) is :
Rationale: "first part will be zero always 2 nd part with power of three therefore , the second term has a units digit of 9 . of course 0 + 9 = 9 , a"
annotated_formula: add(reminder(multiply(reminder(46, const_4), 93), const_10), reminder(10, const_10))