Alright, let's work through 7140 times 9451 step by step
7140 × 9451 = 9451 × (7140)
+ 9451 × 0 which equals 0
+ 9451 × 40 resulting in 378040
+ 9451 × 100 that equals 945100
+ 9451 × 7000 giving us 66157000

= 67480140
