Alright, let's work through 87849370 times 71099740 step by step
87849370 × 71099740 = 71099740 × (87849370)
+ 71099740 × 0 resulting in 0
+ 71099740 × 70 that results in 4976981800
+ 71099740 × 300 which equals 21329922000
+ 71099740 × 9000 yielding 639897660000
+ 71099740 × 40000 resulting in 2843989600000
+ 71099740 × 800000 yielding 56879792000000
+ 71099740 × 7000000 that equals 497698180000000
+ 71099740 × 80000000 resulting in 5687979200000000

= 6246067366163800
