Alright, let's work through 7140 times 1864 step by step
7140 × 1864 = 1864 × (7140)
+ 1864 × 0 giving us 0
+ 1864 × 40 giving us 74560
+ 1864 × 100 that equals 186400
+ 1864 × 7000 resulting in 13048000

= 13308960
