Alright, let's work through 7790 times 7663 step by step
7790 × 7663 = 7663 × (7790)
+ 7663 × 0 yielding 0
+ 7663 × 90 that equals 689670
+ 7663 × 700 that is equal 5364100
+ 7663 × 7000 yielding 53641000

= 59694770
