Let's calculate 7891 x 8523
7891 × 8523 = 8523 × (7891)
+ 8523 × 1 resulting in 8523
+ 8523 × 90 resulting in 767070
+ 8523 × 800 which equals 6818400
+ 8523 × 7000 that is equal 59661000

= 67254993
