Answer = 68.4210526316 or 1300/19 of a quantity.
13/19 as a decimal is approx 0.684. (0.684210526316)Therefore, if you are asked 13/19 of x, just multiply 13/19 by x.
0.684210526316* 100 = 68.4210526316 so if your asked to fine 13/19% of a quantity, since % means to multiply by hundred, the answer is 68.4210526316. (It doesn’t seem like you were asked to round up).