The sales volume of a store in the second quarter is 480,000 yuan, which is 30,000 yuan less than (3/4) the sales volume in the first quarter. How much was the sales in the first quarter? What is the correct column
某商店第二季度销售额是48万元，比第一季度的销售额的(3/4)少3万元．第一季度的销售额是多少万元？正确的列式是多少
<gadget id="calculator">48 + 3</gadget>
<output>51</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">51 / (3/4)</gadget>
<output>68</output>

<result>68</result>