Alright, let's work through 20969107 times 79789034 step by step
20969107 × 79789034 = 79789034 × (20969107)
+ 79789034 × 7 that is equal 558523238
+ 79789034 × 00 yielding 0
+ 79789034 × 100 yielding 7978903400
+ 79789034 × 9000 producing 718101306000
+ 79789034 × 60000 yielding 4787342040000
+ 79789034 × 900000 giving us 71810130600000
+ 79789034 × 0000000 that results in 0
+ 79789034 × 20000000 yielding 1595780680000000

= 1673104791372638
