46*7-54*5=how much.
46*7-54*5=多少．
<gadget id="calculator">46 * 7</gadget>
<output>322</output>

<gadget id="calculator">54 * 5</gadget>
<output>270</output>

<gadget id="calculator">322 - 270</gadget>
<output>52</output>

<result>52</result>