Would someone please check my understanding of Math.random?

var input1 = prompt("Please provide a low number!"); var bottomNumber = parseInt(input1); var input2 = prompt("Plase provide a high number!"); var topNumber = parseInt(input2); var randomNumber = Math.floor(Math.random() * (topNumber - bottomNumber + 1)) + bottomNumber; document.write(randomNumber);

//For example: for a random number between 10 and 50.... 50(topNumber) - 10(bottomNumber) + 1= 41.... Math.random gives us a number between 0 and 41...then add bottomNumber (10)..51..than math.floor takes it back down to 50 because it does not include 51 so 50.9999 will be rounded down to 50.

this is my little weird explanation to myself on how the math is working on this. Can someone look over this to make sure i understand what the guy has said? I think i do but the way he explains the math is a bit confusing to me. Probably seems silly but thank you!