The school buys 25 boxes of white chalk and 25 colored chalks each. The white chalk is 0.48 yuan per box, and the colored chalk is 0.72 yuan per box. How much does the school have to pay in total?
学校买白色粉笔和彩色粉笔各25盒，白色粉笔每盒0.48元，彩色粉笔每盒0.72元，学校一共要付多少元？
<gadget id="calculator">0.48 + 0.72</gadget>
<output>1.2</output>

<gadget id="calculator">1.2 * 25</gadget>
<output>30</output>

<result>30</result>