No problem, we've got 8405 and 6435 to multiply
8405 × 6435 = 6435 × (8405)
+ 6435 × 5 yielding 32175
+ 6435 × 00 resulting in 0
+ 6435 × 400 that results in 2574000
+ 6435 × 8000 that equals 51480000

= 54086175
