A mailman has to deliver 48 pieces of junk mail.  There are 8 houses on the block.  2 of the houses have white mailboxes and 3 have red mailboxes.  How many pieces of junk mail will each of those houses get?
The mailman has 48 pieces of junk mail / 8 houses = 
<gadget id="calculator">48/8</gadget>
<output>6</output>
6 pieces per house.
The houses with white mailboxes get 2 * 6 pieces = 
<gadget id="calculator">2*6</gadget>
<output>12</output>
12 pieces of junk mail.
The houses with red mailboxes get 3 * 6 pieces = 
<gadget id="calculator">3*6</gadget>
<output>18</output>
18 pieces of junk mail.
The houses with red and white mailboxes will get a total of 12 + 18 = 
<gadget id="calculator">12+18</gadget>
<output>30</output>
30 pieces of junk mail.
30/5 = 
<gadget id="calculator">30/5</gadget>
<output>6</output>
6 pieces of junk mail each.

<result>6</result>