[ 2746, 'vgppgo4', 985, '5405', 814, 'oJ8Wpx4', 1727, '893', 1286, '7601', 8286, 'V3qQBFK', 3388, '8753', 2721, 'ykz9WR5', 3087, '7261', 5190, '229' ]

Expected: 91953, instead got: 90947

Are you using parseInt, which will give a number to a non-numerical string if it has numbers in front?