Alright, let's work through 3135 times 7021 step by step
3135 × 7021 = 7021 × (3135)
+ 7021 × 5 resulting in 35105
+ 7021 × 30 that equals 210630
+ 7021 × 100 that results in 702100
+ 7021 × 3000 that results in 21063000

= 22010835
