It looks like you want to write out the number described by the words:
- twelve thousand
- twelve hundred
- twelve
Let's break it down:
- Twelve thousand = 12,000
- Twelve hundred = 1,200 (because 12 × 100 = 1,200)
- Twelve = 12
Now, add them all together: 12,000 + 1,200 + 12 = 13,212
Final number: 13,212
If you want it written in words, it is: Thirteen thousand two hundred twelve.