No problem, we've got 7941864 and 49598737 to multiply
7941864 × 49598737 = 49598737 × (7941864)
+ 49598737 × 4 what gives us 198394948
+ 49598737 × 60 giving us 2975924220
+ 49598737 × 800 yielding 39678989600
+ 49598737 × 1000 giving us 49598737000
+ 49598737 × 40000 giving us 1983949480000
+ 49598737 × 900000 that is equal 44638863300000
+ 49598737 × 7000000 resulting in 347191159000000

= 393906423825768
