Alright, let's work through 2740 times 6638 step by step
2740 × 6638 = 6638 × (2740)
+ 6638 × 0 yielding 0
+ 6638 × 40 what gives us 265520
+ 6638 × 700 resulting in 4646600
+ 6638 × 2000 that results in 13276000

= 18188120
