Alright, let's work through 1800 times 4380 step by step
1800 × 4380 = 4380 × (1800)
+ 4380 × 0 yielding 0
+ 4380 × 00 that equals 0
+ 4380 × 800 that is equal 3504000
+ 4380 × 1000 what gives us 4380000

= 7884000
