Alright, let's work through 78637440 times 85022912 step by step
78637440 × 85022912 = 85022912 × (78637440)
+ 85022912 × 0 that is equal 0
+ 85022912 × 40 giving us 3400916480
+ 85022912 × 400 resulting in 34009164800
+ 85022912 × 7000 that is equal 595160384000
+ 85022912 × 30000 producing 2550687360000
+ 85022912 × 600000 that is equal 51013747200000
+ 85022912 × 8000000 which equals 680183296000000
+ 85022912 × 70000000 that results in 5951603840000000

= 6685984141025280
