Alright, let's work through 20690297 times 7832807 step by step
20690297 × 7832807 = 7832807 × (20690297)
+ 7832807 × 7 giving us 54829649
+ 7832807 × 90 that is equal 704952630
+ 7832807 × 200 that is equal 1566561400
+ 7832807 × 0000 which equals 0
+ 7832807 × 90000 resulting in 704952630000
+ 7832807 × 600000 giving us 4699684200000
+ 7832807 × 0000000 that equals 0
+ 7832807 × 20000000 yielding 156656140000000

= 162063103173679
