We're going to solve 8399 multiplied by 7961
8399 × 7961 = 7961 × (8399)
+ 7961 × 9 which equals 71649
+ 7961 × 90 what gives us 716490
+ 7961 × 300 that equals 2388300
+ 7961 × 8000 what gives us 63688000

= 66864439
