If you wanna produce Fiberglass, with all buildings on Lv.1 you woud need 65536 seconds => 1092m 16s => 18h 12m 16s. Nearly 18 hours for ONE Fiberglass
Because the Iron*2048 is needed and one Iron needs 4 Iron ore and 4 Charcoal so Charcoal*8192. Every Charcoal needs 8 Log so the amount of logs eqauals 65536. One LOG is produced every second, so you need 65536 seconds.
Q.E.D.//