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What least number must be subtracted from $289642$ to get a number exactly divisible by $76?$

What least number must be added in $864523$ to get a number exactly divisible by $45$?

The cost price of $36$radio sets is $₹21060$. Find the cost of one radio set.

Divide and check the answer by division algorithm:

$9256708÷1000$

The product of two numbers is $531586$. If one number is $73$, find the other number.

On dividing $96324$ by a certain number, the quotient is $393$ and the remainder is $39$. Find the number.

Find the largest $5-$digit number exactly divisible by $27$.

Find the smallest $4-$digit number exactly divisible by $38$.