Find the difference between the sum and the difference of $1 \mathrm{million}$ and $1 \mathrm{thousand}$.

A computer house offers tablets for $₹35,800$ which were originally priced at $₹39,990$. Find the discount given. (In $₹$).

A dealer had $₹ 2,87,925$ with him. He bought $65$ mobile phones at $₹ 4,400$ each. How much money will remain with him after the purchase?

A businessman saves $₹9,876$ every month. How much money will he save in $11$ years? Write your answer in the International system of numeration.

Convert the following as directed.

$25 \mathrm{cm}$ into $\mathrm{mm}$.

Convert the following as directed.

$34 \mathrm{kg}$ into $\mathrm{g}$.

Convert the following as directed.

$215 \mathrm{m}$ into $\mathrm{cm}$.

Convert the following as directed.

$302 \mathrm{l}$ into $\mathrm{ml}$.