Alright, let's work through 7816 times 7631 step by step
7816 × 7631 = 7631 × (7816)
+ 7631 × 6 yielding 45786
+ 7631 × 10 that is equal 76310
+ 7631 × 800 resulting in 6104800
+ 7631 × 7000 that equals 53417000

= 59643896
