163*39-163*29.
163*39-163*29．
<gadget id="calculator">163 * 39</gadget>
<output>6_357</output>

<gadget id="calculator">163 * 29</gadget>
<output>4_727</output>

<gadget id="calculator">6_357 - 4_727</gadget>
<output>1_630</output>

<result>1_630</result>