We're going to solve 7643 multiplied by 9780
7643 × 9780 = 9780 × (7643)
+ 9780 × 3 what gives us 29340
+ 9780 × 40 that equals 391200
+ 9780 × 600 producing 5868000
+ 9780 × 7000 producing 68460000

= 74748540
