Alright, let's work through 42099660 times 49158516 step by step
42099660 × 49158516 = 49158516 × (42099660)
+ 49158516 × 0 producing 0
+ 49158516 × 60 what gives us 2949510960
+ 49158516 × 600 that equals 29495109600
+ 49158516 × 9000 yielding 442426644000
+ 49158516 × 90000 yielding 4424266440000
+ 49158516 × 000000 resulting in 0
+ 49158516 × 2000000 that results in 98317032000000
+ 49158516 × 40000000 which equals 1966340640000000

= 2069556809704560
