Python is widely used in machine learning problems, which contain advanced math. We will start with the very basic arithmetic operations. These are:
- addition (`+` operator)
- subtraction (`-` operator)
- multiplication (`*` operator)
- division (`/` operator)


Perform the simplest math operations:
1. Add `203` and `34`.
2. Subtract `18` from `34`.
3. Divide `107` by `19`.

In the first section, you will be introduced to the very basics of Python - how to interact with Python, perform simple operations, and output results.

In the past section, you performed different operations with numbers. In this section, you will learn how to save values in computer memory and be able to use them in the future for any purpose.

During the last two sections, you mostly worked with numerical data. In the third section, you will learn how to work with textual data in Python (strings), how to manipulate such data, what methods can be applied to them, and so on.

Fill in the blanks to complete the tasks.