Alright, let's work through 87580741 times 66731918 step by step
87580741 × 66731918 = 66731918 × (87580741)
+ 66731918 × 1 which equals 66731918
+ 66731918 × 40 resulting in 2669276720
+ 66731918 × 700 which equals 46712342600
+ 66731918 × 0000 producing 0
+ 66731918 × 80000 which equals 5338553440000
+ 66731918 × 500000 that equals 33365959000000
+ 66731918 × 7000000 what gives us 467123426000000
+ 66731918 × 80000000 that is equal 5338553440000000

= 5844430826791238
