Randy had 32 biscuits. His father gave him 13 biscuits as a gift. His mother gave him 15 biscuits. Randy’s brother ate 20 of these biscuits. How many biscuits are Randy left with?
After his father gave him 13 biscuits, Randy has 32 + 13 = 
<gadget id="calculator">32+13</gadget>
<output>45</output>
45 biscuits.
After his mother gave him 15 biscuits, Randy has 45 + 15 = 
<gadget id="calculator">45+15</gadget>
<output>60</output>
60 biscuits.
After his brother ate 20 of the biscuits. Randy has 60 - 20 = 
<gadget id="calculator">60-20</gadget>
<output>40</output>
40 biscuits.

<result>40</result>