Alright, let's work through 6940 times 4392 step by step
6940 × 4392 = 4392 × (6940)
+ 4392 × 0 giving us 0
+ 4392 × 40 yielding 175680
+ 4392 × 900 which equals 3952800
+ 4392 × 6000 yielding 26352000

= 30480480
