When a number is divided by 4, the quotient is 18 and the remainder is 3. What is the number?
一个数除以4，商是18，余数是3，这个数是多少
<gadget id="calculator">18 * 4</gadget>
<output>72</output>

<gadget id="calculator">72 + 3</gadget>
<output>75</output>

<result>75</result>