Alright, let's work through 13093889 times 12438361 step by step
13093889 × 12438361 = 12438361 × (13093889)
+ 12438361 × 9 which equals 111945249
+ 12438361 × 80 yielding 995068880
+ 12438361 × 800 giving us 9950688800
+ 12438361 × 3000 that results in 37315083000
+ 12438361 × 90000 that is equal 1119452490000
+ 12438361 × 000000 that results in 0
+ 12438361 × 3000000 that is equal 37315083000000
+ 12438361 × 10000000 producing 124383610000000

= 162866518275929
