Alright, let's work through 5390 times 310 step by step
5390 × 310 = 310 × (5390)
+ 310 × 0 what gives us 0
+ 310 × 90 which equals 27900
+ 310 × 300 which equals 93000
+ 310 × 5000 that equals 1550000

= 1670900
