Class 4 and Class 2 held the "June 1" Gala, and the counselor teacher brought a sum of money to buy candies. If you bought 13 kilograms of mangoes, there was still a difference of 4 yuan. If you bought 15 kilograms of toffee, there was still 2 yuan left. It is known that per kilogram of mango is 2 yuan more expensive than toffee, so how much yuan did the counselor bring?
四2班举行"六一"联欢晚会，辅导员老师带着一笔钱去买糖果，如果买芒果13千克，还差4元，如果买奶糖15千克，则还剩2元．已知每千克芒果比奶糖贵2元，那么辅导员老师带了多少元钱．
<gadget id="calculator">2 * 13</gadget>
<output>26</output>

<gadget id="calculator">26 - 2 - 4</gadget>
<output>20</output>

<gadget id="calculator">15 - 13</gadget>
<output>2</output>

<gadget id="calculator">20 / 2</gadget>
<output>10</output>

<gadget id="calculator">10 * 15</gadget>
<output>150</output>

<gadget id="calculator">150 + 2</gadget>
<output>152</output>

<result>152</result>