No problem, we've got 6641 and 6990 to multiply
6641 × 6990 = 6990 × (6641)
+ 6990 × 1 that is equal 6990
+ 6990 × 40 resulting in 279600
+ 6990 × 600 that is equal 4194000
+ 6990 × 6000 yielding 41940000

= 46420590
