Alright, let's work through 18800991 times 73051875 step by step
18800991 × 73051875 = 73051875 × (18800991)
+ 73051875 × 1 what gives us 73051875
+ 73051875 × 90 resulting in 6574668750
+ 73051875 × 900 resulting in 65746687500
+ 73051875 × 0000 which equals 0
+ 73051875 × 00000 resulting in 0
+ 73051875 × 800000 which equals 58441500000000
+ 73051875 × 8000000 that equals 584415000000000
+ 73051875 × 10000000 that equals 730518750000000

= 1373447644408125
