A vegetable field harvested 3,200 kilograms of vegetables this year, among which tomatoes accounted for (3/8). The tomatoes harvested this year were equivalent to last year's (4/5). How many kilograms of tomatoes were harvested last year?
一块菜地今年收蔬菜3200千克，其中西红柿占(3/8)，今年收的西红柿相当于去年的(4/5)，去年收西红柿多少千克？
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(3/8) / (4/5)</gadget>
<output>15/32 = around 0.46875</output>

<gadget id="calculator">3_200 * (15/32)</gadget>
<output>1_500</output>

<result>1_500</result>