Alright, let's work through 1648 times 543 step by step
1648 × 543 = 543 × (1648)
+ 543 × 8 what gives us 4344
+ 543 × 40 that results in 21720
+ 543 × 600 that results in 325800
+ 543 × 1000 that is equal 543000

= 894864
