No problem, we've got 7840 and 8404 to multiply
7840 × 8404 = 8404 × (7840)
+ 8404 × 0 that is equal 0
+ 8404 × 40 producing 336160
+ 8404 × 800 resulting in 6723200
+ 8404 × 7000 what gives us 58828000

= 65887360
