1 Box = 50 Envelopes
2 Box(es) = 100 Envelopes
5 Box(es) = 250 Envelopes
10 Box(es) = 500 Envelopes
20 Box(es) = 1,000 Envelopes
40 Box(es) = 2,000 Envelopes
100 Box(es) = 5,000 Envelopes
168 Box(es) = 8,400 Envelopes