We're going to solve 8171 multiplied by 9805
8171 × 9805 = 9805 × (8171)
+ 9805 × 1 resulting in 9805
+ 9805 × 70 what gives us 686350
+ 9805 × 100 giving us 980500
+ 9805 × 8000 giving us 78440000

= 80116655
