A pencil is 7 cents more expensive than an eraser, and a ballpoint pen can buy 11 pencils. It is known that an eraser is 8 cents, how much is a ballpoint pen?
一支铅笔比一块橡皮贵7分，一支园珠笔可买11支铅笔，已知一块橡皮8分，一支园珠笔多少钱？
<gadget id="calculator">7 + 8</gadget>
<output>15</output>

<gadget id="calculator">15 * 11</gadget>
<output>165</output>

<result>165</result>