Alright, let's work through 1142 times 3090 step by step
1142 × 3090 = 3090 × (1142)
+ 3090 × 2 what gives us 6180
+ 3090 × 40 that results in 123600
+ 3090 × 100 that results in 309000
+ 3090 × 1000 giving us 3090000

= 3528780
