We're going to solve 7640 multiplied by 3870
7640 × 3870 = 3870 × (7640)
+ 3870 × 0 resulting in 0
+ 3870 × 40 yielding 154800
+ 3870 × 600 that is equal 2322000
+ 3870 × 7000 which equals 27090000

= 29566800
