Alright, let's work through 21029658 times 88719916 step by step
21029658 × 88719916 = 88719916 × (21029658)
+ 88719916 × 8 that is equal 709759328
+ 88719916 × 50 that results in 4435995800
+ 88719916 × 600 producing 53231949600
+ 88719916 × 9000 which equals 798479244000
+ 88719916 × 20000 producing 1774398320000
+ 88719916 × 000000 producing 0
+ 88719916 × 1000000 that equals 88719916000000
+ 88719916 × 20000000 what gives us 1774398320000000

= 1865749491268728
