kda overall

if (location.search != '?metric=impact') {
alert('You will be redirected to most game impact page then execute the script again.');
location = 'http://dotabuff.com/players/' + location.pathname.substring(9).split('/')[0] + '/heroes?metric=impact';
}
else {
k = d = a = 0;
records = eval($('span.game-record')[0].textContent.replace(/-/g, '+').replace(/,/, ''));
$('table td:nth-child(4)').each(function(z,b){k += (+b.textContent.replace(/,/g,''))});
$('table td:nth-child(5)').each(function(z,b){d += (+b.textContent.replace(/,/g,''))});
$('table td:nth-child(6)').each(function(z,b){a += (+b.textContent.replace(/,/g,''))});
alert('Total kills : ' + k + '\n'
+ 'Total deaths : ' + d + '\n'
+ 'Total assists : ' + a + '\n'
+ 'Total matches ' + records
+ '\n' + 'KDA : ' + k/records
+ ', ' + d/records + ', ' + a/records + '\n'
+ 'Final KDA : ' + ((k/records) + (a/records)) / (d/records));
}

k = d = a = 0;
records = eval($('span.game-record')[0].innerText.replace('-', '+').replace('-', '+'));
$('table td:nth-child(4)').each(function(z,b){k += (+b.innerText.replace(/,/g,''))})
$('table td:nth-child(5)').each(function(z,b){d += (+b.innerText.replace(/,/g,''))})
$('table td:nth-child(6)').each(function(z,b){a += (+b.innerText.replace(/,/g,''))})
console.log('Records :', k, d, a);
console.log('KDA :', k/records, d/records, a/records);
console.log('Total KDA :', ((k/records) + (a/records)) / (d/records));