Convert
`20m//s` to `km//h`

Explanation

To convert \( 20 \, \text{m/s} \) to \( \text{km/h} \), we can follow these steps:

### Step 1: Understand the conversion factors
We know that:
- \( 1 \, \text{m} = 10^{-3} \, \text{km} \) (or \( 1 \, \text{km} = 1000 \, \text{m} \))
- \( 1 \, \text{s} = \frac{1}{3600} \, \text{h} \) (or \( 1 \, \text{h} = 3600 \, \text{s} \))

### Step 2: Convert meters to kilometers
...