Alright, let's work through 87656779 times 67497227 step by step
87656779 × 67497227 = 67497227 × (87656779)
+ 67497227 × 9 yielding 607475043
+ 67497227 × 70 yielding 4724805890
+ 67497227 × 700 that equals 47248058900
+ 67497227 × 6000 giving us 404983362000
+ 67497227 × 50000 giving us 3374861350000
+ 67497227 × 600000 that equals 40498336200000
+ 67497227 × 7000000 that results in 472480589000000
+ 67497227 × 80000000 producing 5399778160000000

= 5916589510251833
