Coursera quiz computer

gistfile1.txt

grades = _.map($('.course-quiz-item-score > td >span'), 
  function(i){
    return _.map($(i).clone().children().remove().end().text().split(' / '),
    function(j){return Number.parseFloat(j)});});
pos = _.reduce(grades, function(memo, i){ return memo + i[1]}, 0)
got = _.reduce(grades, function(memo, i){ return memo + i[0]}, 0)
result = got / pos
alert('You got ' + result*100 + '% till now')