Alright, let's work through 2190 times 9786 step by step
2190 × 9786 = 9786 × (2190)
+ 9786 × 0 which equals 0
+ 9786 × 90 that results in 880740
+ 9786 × 100 resulting in 978600
+ 9786 × 2000 yielding 19572000

= 21431340
