Alright, let's work through 1668 times 7570 step by step
1668 × 7570 = 7570 × (1668)
+ 7570 × 8 resulting in 60560
+ 7570 × 60 that is equal 454200
+ 7570 × 600 that is equal 4542000
+ 7570 × 1000 giving us 7570000

= 12626760
