Alright, let's work through 79423664 times 90251585 step by step
79423664 × 90251585 = 90251585 × (79423664)
+ 90251585 × 4 which equals 361006340
+ 90251585 × 60 that is equal 5415095100
+ 90251585 × 600 that is equal 54150951000
+ 90251585 × 3000 resulting in 270754755000
+ 90251585 × 20000 that equals 1805031700000
+ 90251585 × 400000 that is equal 36100634000000
+ 90251585 × 9000000 which equals 812264265000000
+ 90251585 × 70000000 giving us 6317610950000000

= 7168111562507440
