Guangming Primary School donates to impoverished mountainous areas. The fifth grade donates 120 yuan, the fourth grade donates 3/4 of the fifth grade, how much is the fourth grade donated?
光明小学向贫困山区捐款．五年级捐款120元，四年级捐款的钱数是五年级的(3/4)，四年级捐款多少元？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">120 * (3/4)</gadget>
<output>90</output>

<result>90</result>