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Q8.html
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<!DOCTYPE html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<title>Euler-8</title>
</head>
<body>
<div>
<input id="result" type="text" readonly>
</div>
<script>
let str = "7316717653133062491922511967442657474235534919493496983520312774506326239578318016984801869478851843858615607891129494954595017379583319528532088055111254069874715852386305071569329096329522744304355766896648950445244523161731856403098711121722383113622298934233803081353362766142828064444866452387493035890729629049156044077239071381051585930796086670172427121883998797908792274921901699720888093776657273330010533678812202354218097512545405947522435258490771167055601360483958644670632441572215539753697817977846174064955149290862569321978468622482839722413756570560574902614079729686524145351004748216637048440319989000889524345065854122758866688116427171479924442928230863465674813919123162824586178664583591245665294765456828489128831426076900422421902267105562632111110937054421750694165896040807198403850962455444362981230987879927244284909188845801561660979191338754992005240636899125607176060588611646710940507754100225698315520005593572972571636269561882670428252483600823257530420752963450"
let max = 0,result = 0;
for (let i = 0; i < str.length - 12; i++) {
let part = str.substr(i, 13);
let currentProduct = 1;
for (let n of part) {
currentProduct *= +n;
}
max = Math.max(max, currentProduct);
}
result = max;
document.getElementById("result").value = result;
</script>
</body>