Let's calculate 3978 x 7636
3978 × 7636 = 7636 × (3978)
+ 7636 × 8 resulting in 61088
+ 7636 × 70 which equals 534520
+ 7636 × 900 which equals 6872400
+ 7636 × 3000 that results in 22908000

= 30376008
