We're going to solve 1641 multiplied by 6560
1641 × 6560 = 6560 × (1641)
+ 6560 × 1 what gives us 6560
+ 6560 × 40 yielding 262400
+ 6560 × 600 that results in 3936000
+ 6560 × 1000 resulting in 6560000

= 10764960
