Alright, let's work through 42388209 times 53082920 step by step
42388209 × 53082920 = 53082920 × (42388209)
+ 53082920 × 9 resulting in 477746280
+ 53082920 × 00 resulting in 0
+ 53082920 × 200 yielding 10616584000
+ 53082920 × 8000 that equals 424663360000
+ 53082920 × 80000 giving us 4246633600000
+ 53082920 × 300000 which equals 15924876000000
+ 53082920 × 2000000 yielding 106165840000000
+ 53082920 × 40000000 that equals 2123316800000000

= 2250089907290280
