We can chain multiple operations together to get a single result:

echo 2 + 3 + 4 + 5 - 1.1; // Prints: 12.9 echo 2 * 9 / 6; // Prints: 3

You might have learned about operations having an order of precedence in a math class. This means that operations in a chain aren’t simply performed from left to right; rather each operator is given a special rank.

Operations will be evaluated in the following order:

- Any operation wrapped in parentheses (
`()`

) - Exponents (
`**`

) - Multiplication (
`*`

) and division (`/`

) - Addition (
`+`

) and subtraction (`-`

).

The acronym PEMDAS can be helpful for remembering the order of precedence for these arithmetic operations.

echo 1 + 3 * 9; // Prints: 28

In the example above, `3 * 9`

(27) is calculated first and then is added to 1 to yield a final result of 28. We can change what this expression returns by using parentheses:

echo (1 + 3) * 9; // Prints: 36

Here, `1 + 3`

(4) is calculated first and then that value is multiplied by 9 to which returns 36.

Let’s practice writing some chained operations!

### Instructions

**1.**

Heya! Can you help me out. Use `echo`

to print the answer to the terminal.

I’m trying to figure out how much money I should have. At the start of the day I had $94.

- I spent $4.25 on coffee
- A friend gave me $7 that he owed me
- I went out for a meal. The bill was $23.50, but I also gave a 20% tip.
- Some friends and I found $20 on the ground and split it four ways

I think that’s everything.

Use a single chained operation to get your result!