We're going to solve 7080 multiplied by 7870
7080 × 7870 = 7870 × (7080)
+ 7870 × 0 which equals 0
+ 7870 × 80 yielding 629600
+ 7870 × 000 resulting in 0
+ 7870 × 7000 resulting in 55090000

= 55719600
