Alright, let's work through 18680358 times 10357355 step by step
18680358 × 10357355 = 10357355 × (18680358)
+ 10357355 × 8 that is equal 82858840
+ 10357355 × 50 what gives us 517867750
+ 10357355 × 300 that is equal 3107206500
+ 10357355 × 0000 what gives us 0
+ 10357355 × 80000 giving us 828588400000
+ 10357355 × 600000 what gives us 6214413000000
+ 10357355 × 8000000 what gives us 82858840000000
+ 10357355 × 10000000 giving us 103573550000000

= 193479099333090
