John raises emu.  He has 4 pens for emu and each pen has 6 emus in it.  Each female emu lays 1 egg per day.  If half the emu are females how many eggs does he get a week?
There are 6*4=
<gadget id="calculator">6*4</gadget>
<output>24</output>
24 emus.
So there are 24/2=
<gadget id="calculator">24/2</gadget>
<output>12</output>
12 female emus.
So he gets 12*7=
<gadget id="calculator">12*7</gadget>
<output>84</output>
84 eggs a week.

<result>84</result>