540-297+998-103．
540-297+998-103．
<gadget id="calculator">540 - 297</gadget>
<output>243</output>

<gadget id="calculator">998 - 103</gadget>
<output>895</output>

<gadget id="calculator">243 + 895</gadget>
<output>1_138</output>

<result>1_138</result>