180-133.9

46.1

To solve 180 - 133.9, you need to subtract 133.9 from 180. Here's how you can do it:

Step 1: Start with the number 180.
Step 2: Take away 133.9 from 180.
Step 3: Subtract digit by digit, starting from the rightmost digit.
- Subtract 9 from 0. Since 0 is smaller than 9, you need to borrow from the next digit.
- Borrow 1 from the leftmost digit, making it 7.
- Add the borrowed 1 to 0, making it 10.
- Subtract 9 from 10, which gives you 1.
- Next, subtract 3 from 7, which gives you 4.
- Finally, subtract 1 from 1, which gives you 0.
Step 4: Combine the results of the individual subtractions: 180 - 133.9 = 46.1.

Therefore, 180 - 133.9 equals 46.1.