Alright, let's work through 1406 times 9620 step by step
1406 × 9620 = 9620 × (1406)
+ 9620 × 6 yielding 57720
+ 9620 × 00 which equals 0
+ 9620 × 400 what gives us 3848000
+ 9620 × 1000 that equals 9620000

= 13525720
