Alright, let's work through 10555678 times 53458510 step by step
10555678 × 53458510 = 53458510 × (10555678)
+ 53458510 × 8 that results in 427668080
+ 53458510 × 70 giving us 3742095700
+ 53458510 × 600 what gives us 32075106000
+ 53458510 × 5000 yielding 267292550000
+ 53458510 × 50000 what gives us 2672925500000
+ 53458510 × 500000 what gives us 26729255000000
+ 53458510 × 0000000 giving us 0
+ 53458510 × 10000000 which equals 534585100000000

= 564290817919780
