pencil is 7 cents more expensive than a piece of eraser. The price of a pen can buy 11 pencils. Given that a piece of eraser is 8 cents, how much is a pen?
一支铅笔比一块橡皮贵7角，一支钢笔的价钱可买11支铅笔，已知一块橡皮8角，那么一支钢笔多少元？
<gadget id="calculator">7 + 8</gadget>
<output>15</output>

<gadget id="calculator">11 / 10</gadget>
<output>11/10 = around 1.1</output>

<gadget id="calculator">15 * (11/10)</gadget>
<output>33/2 = around 16.5</output>

<result>33/2 = around 16.5</result>