please provide an answer for it ASAP

READ THESE DIRECTIONS The problems in the next part of the exam are slightly different from those you have just done. In these problems, you will be told exactly what each flow-chart is to accomplish, and you must decide what number must be in a specified box, in order that some-one following the flowchart will do the required job - no more and no less TURN THE PAGE AND CONTINUE The purpose of the following flow-chart is to put a zero in each of the boues: 5,7 , and 9 . in order to accomplish exactly this - no more and no less + what number must be in box 3 ? Subtract inunber in bor 12) - inumber in box 12). put rest inte box 2 . Charge instruction 1: Decrease the last bow-tumber meitioned in it, by 2 . St the iss bosnumber merbicned in instuction 1 equal to inumber in ber 3 ? What number mat be in bou 3