Question

What is `812\div 0.4`?

Answer 1

`812-:0.04=20300`

Explanation:

When we divide a number by a fraction say by `p/q`, it is equivalent to multiplying it with its reciprocal `q/p` i.e. multiply by a fraction reversing numerator and denominator.

If we have to divide by a decimal, it can be converted in to fraction. For example `0.04=4/100`

Hence `812-:0.04=812-:4/100`

= `812xx100/4`

= `203cancel812xx100/(1cancel4)`

= `20300`