(0.65+1.3*0.7)/1.56.
(0.65+1.3*0.7)/1.56．
<gadget id="calculator">1.3 * 0.7</gadget>
<output>0.91</output>

<gadget id="calculator">0.65 + 0.91</gadget>
<output>1.56</output>

<gadget id="calculator">1.56 / 1.56</gadget>
<output>1</output>

<result>1</result>