# Get your priorities right

yourbasic.org/golang

Why doesn’t this code compute the number of hours and seconds?

```
n := 43210 // time in seconds
fmt.Println(n/60*60, "hours and", n%60*60, "seconds")
```

`43200 hours and 600 seconds`

## Answer

The `*`

, `/`

, and `%`

operators have the same precedence
and are evaluated left to right: `n/60*60`

is the same as `(n/60)*60`

.

Insert a pair of parantheses to force the correct evaluation order.

```
fmt.Println(n/(60*60), "hours and", n%(60*60), "seconds")
```

```
12 hours and 10 seconds
```

Or better yet, use a constant.

```
const SecPerHour = 60 * 60
fmt.Println(n/SecPerHour, "hours and", n%SecPerHour, "seconds")
```

```
12 hours and 10 seconds
```

See Operators: complete list for a full explanation of the evalutation order of operations in Go expressions.