No problem, we've got 8121 and 8063 to multiply
8121 × 8063 = 8063 × (8121)
+ 8063 × 1 that is equal 8063
+ 8063 × 20 yielding 161260
+ 8063 × 100 that is equal 806300
+ 8063 × 8000 yielding 64504000

= 65479623
