No problem, we've got 83796357 and 47350136 to multiply
83796357 × 47350136 = 47350136 × (83796357)
+ 47350136 × 7 which equals 331450952
+ 47350136 × 50 giving us 2367506800
+ 47350136 × 300 what gives us 14205040800
+ 47350136 × 6000 producing 284100816000
+ 47350136 × 90000 that results in 4261512240000
+ 47350136 × 700000 what gives us 33145095200000
+ 47350136 × 3000000 that equals 142050408000000
+ 47350136 × 80000000 which equals 3788010880000000

= 3967768900254552
