After Xingxing Farm adopts the new technology, the vegetable output this year has increased by 30% compared to last year. If last year's vegetable output was 42 tons, how many tons will this year's vegetable output be?
星星农场使用了新技术后，今年的蔬菜产量比去年增产三成，如果去年的蔬菜产量是42吨，今年的蔬菜产量是多少吨．
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 + (3/10)</gadget>
<output>13/10 = around 1.3</output>

<gadget id="calculator">42 * (13/10)</gadget>
<output>273/5 = around 54.6</output>

<result>273/5 = around 54.6</result>