Write answers to the following questions :
Convert `9/40` into decimal fraction.

Explanation

To convert the fraction \( \frac{9}{40} \) into a decimal fraction, we can follow these steps:

### Step 1: Identify the fraction
We start with the fraction \( \frac{9}{40} \).

### Step 2: Find a suitable denominator
To convert the fraction into a decimal, we want the denominator to be a power of 10. The closest power of 10 that can be achieved with 40 is 1000 (which is \( 10^3 \)).

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