Alright, let's work through 49488371 times 15915820 step by step
49488371 × 15915820 = 15915820 × (49488371)
+ 15915820 × 1 which equals 15915820
+ 15915820 × 70 yielding 1114107400
+ 15915820 × 300 which equals 4774746000
+ 15915820 × 8000 yielding 127326560000
+ 15915820 × 80000 which equals 1273265600000
+ 15915820 × 400000 yielding 6366328000000
+ 15915820 × 9000000 producing 143242380000000
+ 15915820 × 40000000 which equals 636632800000000

= 787648004929220
