25* blank=53
Twice.
53
53 + 25 = 78
(20 x 4) + 25 - 52 = 53
53 x 53 = 2809
53 is a prime, so 1 times 53 (unless you allow fractions).
53 times 4
53 times 80 equals 4240.
62 x 53 = 3286
25/8 x 4/9 x 5/4 =125/72 =1 and 53/72
8% of 53 = 4.24 8% of 53 = 53* 8/100 = 106/25 = 4.25