No problem, we've got 6840847 and 5808877 to multiply
6840847 × 5808877 = 5808877 × (6840847)
+ 5808877 × 7 what gives us 40662139
+ 5808877 × 40 that is equal 232355080
+ 5808877 × 800 that results in 4647101600
+ 5808877 × 0000 that results in 0
+ 5808877 × 40000 what gives us 232355080000
+ 5808877 × 800000 yielding 4647101600000
+ 5808877 × 6000000 what gives us 34853262000000

= 39737638798819
