I could get to 118, but it doesn't want a 119th answer, or the UI gets completely broken.
var answer = function() {
var q = $("#question").text().replace(/x|÷|=/g, function(m) { return {'x':'*','÷':'/','=':''}[m]});
$("#answer").val(eval(q)).keyup();
};
$('#question').bind("DOMSubtreeModified", function(){
setTimeout(answer, 200);
});
answer();
Don't have much time to search why :-)