No problem, we've got 5405 and 3826 to multiply
5405 × 3826 = 3826 × (5405)
+ 3826 × 5 that results in 19130
+ 3826 × 00 yielding 0
+ 3826 × 400 what gives us 1530400
+ 3826 × 5000 resulting in 19130000

= 20679530
