Alright, let's work through 20809911 times 85813974 step by step
20809911 × 85813974 = 85813974 × (20809911)
+ 85813974 × 1 yielding 85813974
+ 85813974 × 10 that equals 858139740
+ 85813974 × 900 giving us 77232576600
+ 85813974 × 9000 yielding 772325766000
+ 85813974 × 00000 that is equal 0
+ 85813974 × 800000 giving us 68651179200000
+ 85813974 × 0000000 producing 0
+ 85813974 × 20000000 giving us 1716279480000000

= 1785781161496314
