No problem, we've got 6620412 and 3900360 to multiply
6620412 × 3900360 = 3900360 × (6620412)
+ 3900360 × 2 that equals 7800720
+ 3900360 × 10 what gives us 39003600
+ 3900360 × 400 that is equal 1560144000
+ 3900360 × 0000 which equals 0
+ 3900360 × 20000 giving us 78007200000
+ 3900360 × 600000 that results in 2340216000000
+ 3900360 × 6000000 giving us 23402160000000

= 25821990148320
