No problem, we've got 6691 and 6318 to multiply
6691 × 6318 = 6318 × (6691)
+ 6318 × 1 that is equal 6318
+ 6318 × 90 yielding 568620
+ 6318 × 600 yielding 3790800
+ 6318 × 6000 that is equal 37908000

= 42273738
