Alright, let's work through 7770 times 1615 step by step
7770 × 1615 = 1615 × (7770)
+ 1615 × 0 resulting in 0
+ 1615 × 70 that results in 113050
+ 1615 × 700 yielding 1130500
+ 1615 × 7000 what gives us 11305000

= 12548550
