Drilling Problem. Machinists help?

I don't understand why it is taking so long (5 minutes of constant drilling) just to drill through 1/32" thick sheet metal with a 1/8" drill bit. Please help me figure out how to make it drill through faster and why it is taking so long to drill through something so thin. I am using a 18v Dewalt electric drill by the way.
I have tried 3 different drill bits of various sizes and they all take a long time
 
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