Alright, let's work through 2820 times 4340 step by step
2820 × 4340 = 4340 × (2820)
+ 4340 × 0 giving us 0
+ 4340 × 20 that equals 86800
+ 4340 × 800 giving us 3472000
+ 4340 × 2000 that results in 8680000

= 12238800
