Ned opens a left-handed store.  He sells left-handed mice.  They cost 30% more than normal mice.  He sells 25 a day and his store is open every day except Sunday, Thursday, and Friday.  If normal mice cost $120 how much money does he make a week?
The left-hand mice cost 120*.3=$
<gadget id="calculator">120*.3</gadget>
<output>36</output>
36 more than right-handed ones.
So they cost 120+36=$
<gadget id="calculator">120+36</gadget>
<output>156</output>
156.
So he makes 156*25=$
<gadget id="calculator">156*25</gadget>
<output>3_900</output>
3900 a day.
The store is open 7-3=
<gadget id="calculator">7-3</gadget>
<output>4</output>
4 days a week.
So in a week, he makes 3900*4=$
<gadget id="calculator">3900*4</gadget>
<output>15_600</output>
15,600.

<result>15_600</result>