Divisor + divisor * quotient = 258, what is the dividend
被除数+除数*商=258，则被除数是多少
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">258 * (1/2)</gadget>
<output>129</output>

<result>129</result>