The company plans to charter a bus to take employees who live in other places home for the New Year. The chartered bus fee is fixed. According to the statistics of the number of employees in other places, each person needs to pay 15 yuan. Later, I learned that there were 6 non-local employees who would not go back, so each person would need to pay an extra 3 yuan. How much is the charter fare?
公司准备包一辆大客车送家住外地的员工回家过年，包车费是固定的．根据外地员工人数统计，每人需出15元．后来知道有6名外地员工不回去，这样每人需多出3元．包车费是多少元？
<gadget id="calculator">6 / 3</gadget>
<output>2</output>

<gadget id="calculator">15 * 2</gadget>
<output>30</output>

<gadget id="calculator">15 + 3</gadget>
<output>18</output>

<gadget id="calculator">30 * 18</gadget>
<output>540</output>

<result>540</result>