Directions: Study the following information to answer the given questions:
A number arrangement machine when given an input line of number, rearranges them following a particular rule in each step. The following is the input and the steps of rearrangement.
Input : 715 213 450 906 852 534
Step-I : 76 24 45 96 87 57
Step-II : 13 06 09 15 15 12
Step-III : 78 135 180
Step-IV : 15 9 9
Step V : 135 81
Step VI: 54
Step VII: 20
Step-VI is the last step for this input.
As per the rules followed in the above steps, find out in the given questions the appropriate step for the given input.
Input: 816 527 162 421 736 324
How many steps are needed to arrange the given input?
Input: 816 527 162 421 736 324