<human>:  Dirk sells amulets at a Ren Faire. He sells for 2 days and each day he sells 25 amulets. Each amulet sells for 40 dollars and they cost him 30 dollars to make. If he has to give 10% of his revenue to the faire, how much profit did he make?
<bot>: How many amulets did Dirk sell? ** He sold 2*25=<<2*25=50>>50 amulets
How much money did Dirk make? ** So he made 40*50=$<<40*50=2000>>2000
How much did the faire take? ** The faire took 2000*.1=$<<2000*.1=200>>200
How much did Dirk keep? ** So he kept 2000-200=$<<2000-200=1800>>1800
How much did the amulets cost to make? ** The amulets cost 50*30=$<<50*30=1500>>1500 to make
How much profit did Dirk make? ** So he had a profit of 1800-1500=$<<1800-1500=300>>300
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