Forty-five students from class 1 of the fourth grade went to the Science and Technology Museum to carry out science popularization activities. Each person received 5 yuan as an entrance fee. If they wanted to visit the dinosaur exhibition, each person should pay an additional 3 yuan. The whole class spent a total of 300 yuan in the Science and Technology Museum. How many students in the class visited the dinosaur exhibition?
四年级1班45名同学去科技馆开展科普活动，每人收门票5元，如果要参观恐龙展，每人还应另付3元．全班同学在科技馆一共花了300元．全班有多少名同学参观了恐龙展？
<gadget id="calculator">45 * 5</gadget>
<output>225</output>

<gadget id="calculator">300 - 225</gadget>
<output>75</output>

<gadget id="calculator">75 / 3</gadget>
<output>25</output>

<result>25</result>