Task $1$: Print hello world

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Task $2$: Read in two values $($user input$),$ convert to integers, and then print the sum

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Note: type$($variable$)$ lets you check the data type of variable.

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Note: In jupyter notebooks, you can also display values without the print $($shown below$).$

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Question: What prints if you don't convert to integers first?

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Task $3$: Create a function called "search"

This function should take in two string values $($let$\text{'}$s call them a and $b).$ Both a and $b$ should be set to all lowercase. Then search for the substring $b$ in

a$.$ It should return the index of the found substring, or $-1$ if not found.

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Here are some examples to test

In $[]$: search$(\text{'}$Hello world', 'hello'$)$

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In $[]$: search$(\text{'}$Hello world', $\text{'}\text{'})$