We're going to solve 7689 multiplied by 8780
7689 × 8780 = 8780 × (7689)
+ 8780 × 9 that is equal 79020
+ 8780 × 80 which equals 702400
+ 8780 × 600 which equals 5268000
+ 8780 × 7000 giving us 61460000

= 67509420
