When dividing a number by 30, the quotient and remainder are both 6. What is the number?
用30除一个数，商和余数都是6，这个数是多少．
<gadget id="calculator">30 * 6</gadget>
<output>180</output>

<gadget id="calculator">180 + 6</gadget>
<output>186</output>

<result>186</result>