A vegetable truck is loaded with (1/2) tons of radishes, (1/10) tons less potatoes than radishes, and (7/8) tons more cabbages than potatoes. How many tons of cabbages are loaded on the truck?
一辆运菜车，车上装萝卜(1/2)吨，装的土豆比萝卜少(1/10)吨，装的白菜比土豆多(7/8)吨，车上装了多少吨白菜？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(1/2) - (1/10)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">7 / 8</gadget>
<output>7/8 = around 0.875</output>

<gadget id="calculator">(2/5) + (7/8)</gadget>
<output>51/40 = around 1.275</output>

<result>51/40 = around 1.275</result>