It is a weird question, though. It doesn't say "Seven is 11 percent of what number?" It says "Seven of what number is 11%?" The AC may have been correct. Seven of 1.571428 is close to 11. It's not a percent though, other than a percent of one hundred. Maybe the answer is 0.01571428, seven of which would yield a result close to 0.11, which is 11 percent, right?
It is a weird question, though. It doesn't say "Seven is 11 percent of what number?" It says "Seven of what number is 11%?" The AC may have been correct. Seven of 1.571428 is close to 11. It's not a percent though, other than a percent of one hundred. Maybe the answer is 0.01571428, seven of which would yield a result close to 0.11, which is 11 percent, right?
You made a bad movie. Stop involving the lawyers and blaming everybody else.