<gadget id="calculator">219 - 99</gadget>
<output>120</output>

<result>120</result>
Angela had 219 blackcurrant. Todd grabbed some blackcurrant. Now Angela has 99  blackcurrant. How many did Todd grabbeds?
Angela had 219 blackcurrant. Todd grabbed some blackcurrant. Now Angela has 99 blackcurrant. How many did Todd grabbeds?