Alright, let's work through 2542 times 7846 step by step
2542 × 7846 = 7846 × (2542)
+ 7846 × 2 what gives us 15692
+ 7846 × 40 what gives us 313840
+ 7846 × 500 what gives us 3923000
+ 7846 × 2000 giving us 15692000

= 19944532
