## Variables

We use variables to *store data*.

A variable has a **name** and a **type**.

Let's say we are calculating the total amount that we spent on some items.

We can use 3 variables:

`amount`

of type`Integer`

`price`

of type`Real`

`total`

of type`Real`

Before we use a variable, we must **declare it**.

Click the line and select the item.

Then:

- enter
`amount`

for variable name - select
`Integer`

for its type - enter
`3`

for its initial value

Do the same for `price`

, set its type to `Real`

and value to `1.5`

Now we can finally calculate the total amount.

Declare `total`

, set its type to `Real`

and value to `amount * price`

This last part is very important, you can use variable name as a value!

Lastly, add total block to print the value of `total`

.