**The aim of this puzzle**: Calculate the total number of boxes by multiplying the `rows`

and `columns`

.

**Walkthrough of the solution**: The area of a rectangle is calculated by multiplying the height and width. In the same way, you can calculate the total number of boxes arranged in a rectangle by multiplying the number of rows by the number of columns.

The multiplication symbol in JavaScript is the asterisk `*`

. The `total`

variable should store the `rows`

times the `columns`

. Delete the 100, and replace it with `rows * columns`

.

**Sample code solution**:

(Tap below to reveal)

```
print(rows + 'x' + columns);
var total = rows * columns;
print(total + ' boxes');
```

**JavaScript Concepts**: Arithmetic Operators (* multiplication), Binary Expression (+ concatenation), Assignments

**Grasshopper Concepts**: `print()`

**Additional Code** *(hidden code that runs before the puzzle’s code)*:

```
var rows = pickRandom(4);
var columns = pickRandom(7);
for (let i = 0; i < rows; i++) {
for (let j = 0; j < columns; j++) {
drawBox(pickRandom(color));
}
newLine();
}
```