Alright, let's work through 18220515 times 77696683 step by step
18220515 × 77696683 = 77696683 × (18220515)
+ 77696683 × 5 producing 388483415
+ 77696683 × 10 that results in 776966830
+ 77696683 × 500 giving us 38848341500
+ 77696683 × 0000 that equals 0
+ 77696683 × 20000 resulting in 1553933660000
+ 77696683 × 200000 that equals 15539336600000
+ 77696683 × 8000000 that results in 621573464000000
+ 77696683 × 10000000 which equals 776966830000000

= 1415673578051745
