Instructions- Read It carefully**(I got a null result)**

**1.**

We’re going to do a mathematical “magic” trick. Create a variable, `$my_num`

and assign as its value any number.

Next, create a second variable, `$answer`

and assign `$my_num`

as its value.

Stuck? Get a hint

**2.**

Use the addition assignment operator to add 2 to `$answer`

.

Hint

The point here is to practice using the handy mathematical assignment operators:

$example += 9;

**3.**

Use the multiplication assignment operator to multiply `$answer`

by 2.

Stuck? Get a hint

**4.**

Use the subtraction assignment operator to subtract 2 from `$answer`

.

Stuck? Get a hint

**5.**

Use the division assignment operator to divide `$answer`

by 2.

Stuck? Get a hint

**6.**

Almost there. Use the subtraction assignment operator to subtract your original number ( `$my_num`

) from `$answer`

. Finally, use `echo`

to print `$answer`

to the terminal.

If everything went as it should, `$answer`

should be 1. No matter what your original number was! Don’t belive us? Go ahead try it with a different number for the value of `$my_num`

.

Here my code,

```
<?php
// Write your code below:
$my_num=100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000;
$answer=$my_num;
$answer+=2;
$answer*=2;
$answer-=2;
$answer/=2;
$answer-=$my_num;
echo $answer;
```