Alright, let's work through 13120584 times 98757632 step by step
13120584 × 98757632 = 98757632 × (13120584)
+ 98757632 × 4 resulting in 395030528
+ 98757632 × 80 yielding 7900610560
+ 98757632 × 500 yielding 49378816000
+ 98757632 × 0000 which equals 0
+ 98757632 × 20000 giving us 1975152640000
+ 98757632 × 100000 giving us 9875763200000
+ 98757632 × 3000000 that equals 296272896000000
+ 98757632 × 10000000 what gives us 987576320000000

= 1295757806297088
