Tim wanted to make lemonade for a pool party.  For a gallon of lemonade, his recipe called for 1 cup of fresh lemon juice.  He found that 6 lemons would yield 1 cup of juice.  He figured he would need to make 4 gallons of lemonade for the party.  His best friend Allen asked if Tim could make an extra gallon for him that was twice as tart as the other gallons.  How many lemons will Tim need?
Tim is going to make one gallon twice as tart as the others and each gallon needs 1 cup of juice. So he needs 2*1 = 
<gadget id="calculator">2*1</gadget>
<output>2</output>
2 cups for the tart batch.
In addition, he will make 4 regular gallons of lemonade, which each need 1 cup juice so 4*1 = 
<gadget id="calculator">4*1</gadget>
<output>4</output>
4 cups total.
All total he will need 2 + 4 = 
<gadget id="calculator">2+4</gadget>
<output>6</output>
6 cups of juice.
Each cup requires 6 lemons each and he needs 6 cups of juice so 6 * 6 = 
<gadget id="calculator">6*6</gadget>
<output>36</output>
36 lemons needed.

<result>36</result>