Xiaoming's father bought a batch of goods with 30,000 yuan, and the turnover was 45,000 yuan after the sale. If the business tax is paid at 5% of the turnover, how much profit can the goods make?
小明的爸爸用30000元钱购进一批货物，售出后获得营业额45000元．如果按营业额的5%缴纳营业税后，这批货物可获利多少元？
<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">45_000 * (1/20)</gadget>
<output>2_250</output>

<gadget id="calculator">45_000 - 30_000 - 2_250</gadget>
<output>12_750</output>

<result>12_750</result>