Alright, let's work through 4531 times 2070 step by step
4531 × 2070 = 2070 × (4531)
+ 2070 × 1 what gives us 2070
+ 2070 × 30 what gives us 62100
+ 2070 × 500 resulting in 1035000
+ 2070 × 4000 that is equal 8280000

= 9379170
