No problem, we've got 99786378 and 18536452 to multiply
99786378 × 18536452 = 18536452 × (99786378)
+ 18536452 × 8 producing 148291616
+ 18536452 × 70 that is equal 1297551640
+ 18536452 × 300 which equals 5560935600
+ 18536452 × 6000 which equals 111218712000
+ 18536452 × 80000 giving us 1482916160000
+ 18536452 × 700000 that results in 12975516400000
+ 18536452 × 9000000 that equals 166828068000000
+ 18536452 × 90000000 yielding 1668280680000000

= 1849685406050856
