Ratiram is a milk seller in the city. He sells $13 \mathrm{litres}$ of milk everyday at $₹23$ per litre. How much does he earn (in $₹$)?

A farmer sells $1 \mathrm{litre}$ of milk for $₹11$. In one month he sells $210 \mathrm{litres}$ of milk. How much does he earn in a month (in $₹$)?

A company sells $1 \mathrm{litre}$ of packed water for $₹12$. A shopkeeper buys $240 \mathrm{litres}$ of packed water. How much does he pay?

Each letter $\mathrm{a}, \mathrm{b}, \mathrm{c}$ here stands for a number.

$\underline{\begin{array}{ccccc}& & \mathrm{a}& \mathrm{a}& \mathrm{a}\\ & \times & \mathrm{a}& \mathrm{a}& \mathrm{a}\\ & & \mathrm{a}& \mathrm{a}& \mathrm{a}\\ & \mathrm{a}& \mathrm{a}& \mathrm{a}& +\\ \mathrm{a}& \mathrm{a}& \mathrm{a}& +& +\\ \mathrm{a}& \mathrm{b}& \mathrm{c}& \mathrm{b}& \mathrm{a}\end{array}}$

Take $\mathrm{a}=1$, then find what the numbers $\mathrm{b}$ and $\mathrm{c}$ will be.

Tricks with your age.
Write your age_____
Multiply it by $7$ _____
Again multiply the answer by $13$ _____
Multiply again that answer by $11$_____
Now look at your last answer. Can you find your age in that answer?
How many times does your age show in the answer?

Going round and round!

Do you find a pattern in all these answers?$$

Try to solve using as few steps as you can.

$4228 ÷ 4$

Try to solve using as few steps as you can.

$770÷22$

Try to solve using as few steps as you can.

$9872÷8$