3816-9720/81*16.
3816-9720/81*16．
<gadget id="calculator">9_720 / 81</gadget>
<output>120</output>

<gadget id="calculator">120 * 16</gadget>
<output>1_920</output>

<gadget id="calculator">3_816 - 1_920</gadget>
<output>1_896</output>

<result>1_896</result>