A batch of goods transported 12 tons in the morning, and the number of tons transported in the afternoon is (3/4) in the morning. How many tons of goods were transported in total on this day?
一批货物，上午运走12吨，下午运的吨数是上午的(3/4)，这天一共运走货物多少吨？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">12 * (3/4)</gadget>
<output>9</output>

<gadget id="calculator">9 + 12</gadget>
<output>21</output>

<result>21</result>