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HTML

              
                
              
            
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CSS

              
                
              
            
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JS

              
                
var arr = [1,4,7,10,200]; // we are going to multiply these numbers by 5 and store it in answers
var answers = [];

// we could do it like this
answers[0] = arr[0] * 5; // access array items with array[index], index starts from 0
answers[1] = arr[1] * 5;
answers[2] = arr[2] * 5;
answers[3] = arr[3] * 5;
answers[4] = arr[4] * 5;
console.log(answers); // this prints it to a debugging tool in the browser called the console

// but what if there were more items?
arr = [1,4,7,10,200,34,90210];
answers = []; // reset the answers

// let's use a for loop
for (var i = 0; i < arr.length; i++) { // for ([initial value], [condition expression], [what to do on each loop]) {}
    answers[i] = arr[i] * 5;
}
console.log(answers);
              
            
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999px

Console