Customer acquisition cost (CAC)

<div class="cac"><div class="formula"><div>ACQUISITION COST <b>$1,200</b></div><span>÷</span><div>NEW CUSTOMERS <b id="customers">12</b></div></div><div class="answer">CAC <strong id="value">$100</strong></div><div class="control"><span>NEW CUSTOMERS</span><input id="range" type="range" min="6" max="24" value="12"></div></div>

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const range=document.querySelector('#range');function draw(){document.querySelector('#customers').textContent=range.value;document.querySelector('#value').textContent='$'+Math.round(1200/Number(range.value))}range.oninput=()=>{clearInterval(timer);draw()};let dir=1;const timer=setInterval(()=>{const n=Number(range.value)+dir*2;if(n>=24||n<=6)dir*=-1;range.value=String(Math.max(6,Math.min(24,n)));draw()},520);draw();