<gadget id="calculator">199 - 40</gadget>
<output>159</output>

<result>159</result>
Shiela had 199 blackcurrant. Joey took 40 from him. Now How many blackcurrant Shiela have difference?
Shiela had 199 blackcurrant. Joey took 40 from him. Now How many blackcurrant Shiela have difference?