In the division formula 90/18=5, if the divisor is divided by 6, the quotient should be 15, what should be the dividend.
在除法算式90/18=5中，如果除数除以6，要使商是15，被除数应多少．
<gadget id="calculator">6 / 3</gadget>
<output>2</output>

<result>2</result>