36000/900, change the divisor to 30, to keep the quotient unchanged, how much should the dividend be changed to.
36000/900，把除数改成30，要使商不变，被除数应改成多少．
<gadget id="calculator">900 / 30</gadget>
<output>30</output>

<gadget id="calculator">36_000 / 30</gadget>
<output>1_200</output>

<result>1_200</result>