<style>body{background:#111;color:#fff}</style>
<input id=I oninput=z() placeholder='Use only -+*/() and 4 4s'> = <span id=F></span><hr><div id=O style='display:grid;grid-template-columns:auto auto auto auto auto'><script>
z=e=>{i=I.value
g='üëé'
try {i.match(/^[-+*()/4]*$/g)&&
(v=eval(i)||0)==v|0&&(i.match(/4/g).length==4?(A[v]=i,g='üëç'):0)}catch(e){}
F.innerHTML=v+' '+g
O.innerHTML=''
for(i=0;i<100;)j=(i/5|0)+(i++%5)*20,O.innerHTML+=`<div>${j}: ${A[j]||''}`
localStorage['OS13k44']=JSON.string