……… Soal :65×66+53=14!​

65 × 66 + 53 =

4.290 + 53 =

= 4.343

——————–

14!

(14 × 13 × 12 × 11 × 3.628.800)

(182 × 12 × 11 × 3.628.800)

(2.184 × 11 × 3.628.800)

(24.024 × 3.628.800)

= 87.178.291.200