112 seats in 16 rows of 7 seats so if all seats in a row are filled that is 10 rows but if some seats in a row are not filled then all 16 rows can have someone sitting in them. So anywhere from 6 to 0 empty rows.
Now, to find how many people are not there, all you have to do is subtract the amount of seats and the people there. 112- 70= 42 Now since there are 7 seats per row and 42 is divisible by 7, you can divide 42 by 7. 42÷7= 6 So, 6 rows were empty.
You could secure your new account so the same thing wont happen to that account.most likely you wouldnt beable to fix the damaged done to the hack.ed account