Alright, let's work through 18986495 times 19669611 step by step
18986495 × 19669611 = 19669611 × (18986495)
+ 19669611 × 5 that is equal 98348055
+ 19669611 × 90 which equals 1770264990
+ 19669611 × 400 that is equal 7867844400
+ 19669611 × 6000 producing 118017666000
+ 19669611 × 80000 which equals 1573568880000
+ 19669611 × 900000 that equals 17702649900000
+ 19669611 × 8000000 giving us 157356888000000
+ 19669611 × 10000000 that is equal 196696110000000

= 373456970903445
