There is a rectangular corn field with a length of 160 meters and a width of 50 meters. The planting distance of corn is 0.25 meters, and the row spacing is 0.4 meters. According to past experience, about half of the corn has 2 corn cobs. Produce 0.25 kg of corn kernels. Last year, the price per ton of corn was 2,080 yuan. This year, the price per ton of corn is 2,240 yuan. How much more is expected to be earned this year than last year?
有一块长160米，宽50米的长方形玉米地，种植玉米的株距是0.25米，行距是0.4米，根据往年经验，大约有一半的玉米结了2个玉米棒，平均每个玉米棒大约可产0.25千克玉米粒．去年每吨玉米的价格是2080元，今年每吨玉米的价格是2240元，预计今年比去年多收入多少元？
<gadget id="calculator">0.25 * 0.4</gadget>
<output>0.1</output>

<gadget id="calculator">50 / 0.1</gadget>
<output>500</output>

<gadget id="calculator">0.25 / 10_000</gadget>
<output>0.000025</output>

<gadget id="calculator">2_240 * 160 * 500 * 1.5 * 0.000025</gadget>
<output>6_720</output>

<gadget id="calculator">2_080 * 160 * 500 * 1.5 * 0.000025</gadget>
<output>6_240</output>

<gadget id="calculator">6_720 - 6_240</gadget>
<output>480</output>

<result>480</result>