Alright, let's work through 2173 times 5409 step by step
2173 × 5409 = 5409 × (2173)
+ 5409 × 3 resulting in 16227
+ 5409 × 70 that equals 378630
+ 5409 × 100 resulting in 540900
+ 5409 × 2000 giving us 10818000

= 11753757
