In a week, Mortdecai collects 8 dozen  eggs every Tuesday and Thursday, and he delivers 3 dozen  eggs to the market and 5 dozen eggs to the mall. He then uses 4 dozen eggs to make a pie every Saturday. Mortdecai donates the remaining eggs to the charity by Sunday. How many  eggs does he donate to the charity?
Mortdecai collects a total of 8x2 = 
<gadget id="calculator">8*2</gadget>
<output>16</output>
16 dozens of eggs.
He sells a total of 3 + 5 = 
<gadget id="calculator">3+5</gadget>
<output>8</output>
8 dozens of eggs.
So, 16 - 8 = 
<gadget id="calculator">16-8</gadget>
<output>8</output>
8 dozens of eggs are left.
After using 4 dozens of eggs to make a pie, 8 - 4 = 
<gadget id="calculator">8-4</gadget>
<output>4</output>
4 dozens of eggs are left.
Since there are 12 in 1 dozen, then Mortdecai donates 4 x 12 = 
<gadget id="calculator">4*12</gadget>
<output>48</output>
48 pieces of eggs to the charity.

<result>48</result>