Alright, let's work through 5706 times 1290 step by step
5706 × 1290 = 1290 × (5706)
+ 1290 × 6 that is equal 7740
+ 1290 × 00 producing 0
+ 1290 × 700 resulting in 903000
+ 1290 × 5000 that equals 6450000

= 7360740
