glassha

25%/100%=1/4

(1/4)*100=100/4=25

36/4=9

168/4=42

1grom9

(1) 100 : 100 * 25 = 1 * 25 = 25

(2) 36 : 100 * 25 = 0,36 * 25 = 9

(3) 168 : 100 * 25 = 1,68 * 25 = 42