Alright, let's work through 2535 times 986 step by step
2535 × 986 = 986 × (2535)
+ 986 × 5 producing 4930
+ 986 × 30 what gives us 29580
+ 986 × 500 that equals 493000
+ 986 × 2000 what gives us 1972000

= 2499510
