Fill in the brackets to make the formula established: 96-48/4+4=90.
填上括号后使算式成立：96-48/4+4=90．
<gadget id="calculator">4 + 4</gadget>
<output>8</output>

<gadget id="calculator">48 / 8</gadget>
<output>6</output>

<gadget id="calculator">96 - 6</gadget>
<output>90</output>

<result>90</result>