A farmer has 51 cows. The farmer adds five new cows to its herd and then sells a quarter of the herd. How many cows does the farmer have left?
The farmer has 51+5 = 
<gadget id="calculator">51+5</gadget>
<output>56</output>
56 cows in its herd.
The farmer sells 56/4 = 
<gadget id="calculator">56/4</gadget>
<output>14</output>
14 cows of the herd.
The farmer now has 56-14 = 
<gadget id="calculator">56-14</gadget>
<output>42</output>
42 cows.

<result>42</result>