Let's calculate 7821 x 7070
7821 × 7070 = 7070 × (7821)
+ 7070 × 1 which equals 7070
+ 7070 × 20 that is equal 141400
+ 7070 × 800 that is equal 5656000
+ 7070 × 7000 resulting in 49490000

= 55294470
