(A, B)=135, (A, B)=27, how much is A+B=?
(A，B)=135，(A，B)=27，求A+B=多少．
<gadget id="calculator">27 * 1</gadget>
<output>27</output>

<gadget id="calculator">135 / 27</gadget>
<output>5</output>

<gadget id="calculator">5 * 27 * 1</gadget>
<output>135</output>

<gadget id="calculator">27 + 135</gadget>
<output>162</output>

<result>162</result>