Mr. Salazar had seven dozen oranges. He reserved 1/4 of it for his friend and was able to sell 3/7 of the remaining yesterday. Today, he saw four rotten oranges. How many oranges are left to be sold today?
Mr. Salazar had 7 x 12 = 
<gadget id="calculator">7*12</gadget>
<output>84</output>
84 oranges.
He reserved 84 x 1/4 = 
<gadget id="calculator">84*1/4</gadget>
<output>21</output>
21 oranges for his friend.
Ha had 84 - 21 = 
<gadget id="calculator">84-21</gadget>
<output>63</output>
63 oranges to be sold yesterday.
But only 63 x 3/7 = 
<gadget id="calculator">63*3/7</gadget>
<output>27</output>
27 oranges were sold yesterday.
So, he had 63 - 27 = 
<gadget id="calculator">63-27</gadget>
<output>36</output>
36 oranges left.
Since four oranges are rotten, then only 36 - 4 = 
<gadget id="calculator">36-4</gadget>
<output>32</output>
32 oranges are left to be sold today.

<result>32</result>