Alright, let's work through 7832674 times 20420621 step by step
7832674 × 20420621 = 20420621 × (7832674)
+ 20420621 × 4 resulting in 81682484
+ 20420621 × 70 producing 1429443470
+ 20420621 × 600 resulting in 12252372600
+ 20420621 × 2000 producing 40841242000
+ 20420621 × 30000 producing 612618630000
+ 20420621 × 800000 which equals 16336496800000
+ 20420621 × 7000000 that is equal 142944347000000

= 159948067170554
