Alright, let's work through 7557 times 2615 step by step
7557 × 2615 = 2615 × (7557)
+ 2615 × 7 yielding 18305
+ 2615 × 50 that is equal 130750
+ 2615 × 500 that results in 1307500
+ 2615 × 7000 what gives us 18305000

= 19761555
