Alright, let's work through 1603 times 757 step by step
1603 × 757 = 757 × (1603)
+ 757 × 3 what gives us 2271
+ 757 × 00 that equals 0
+ 757 × 600 that results in 454200
+ 757 × 1000 producing 757000

= 1213471
