Alright, let's work through 7731 times 7877 step by step
7731 × 7877 = 7877 × (7731)
+ 7877 × 1 producing 7877
+ 7877 × 30 yielding 236310
+ 7877 × 700 that is equal 5513900
+ 7877 × 7000 producing 55139000

= 60897087
