How to convert random integers into float between 0 and 1

I am using data from this site to get random numbers. They come in as a buffer, which I convert to binary, then into integer. I would like to finally convert those random numbers into decimal values between 0 and 1 like Math.random() produces.

For example, if I have the integer 151, what do I need to do to make it look more like this float 0.0151234252525372.

Here is my code:

    const bent = require('bent')
    const getBuffer = bent('buffer')

    let array = []
    async function random(){
        try{
            let result = await getBuffer("https://qrng.anu.edu.au/wp-content/plugins/colours-plugin/get_one_binary.php")
            let integer = parseInt(result.toString('utf8'), 2)
            let float = parseFloat(integer) // convert to a decimal between 0 and 1 like Math.random() produces
            array.push(float)
        }
        catch (error){return console.log(error)}
    }
    
    setInterval(()=>random().then(result => {
        console.log(array)
    }),50)

I'm not opposed to using the result of Math.random() to apply some math to the initial random number, but I'm just not sure what the right math would be.