The circumference of the circle increases from 6.28 meters to 9.42 meters, and the diameter increases by how many meters.
圆的周长从6.28米增加到9.42米，直径比原来增加了多少米．
<gadget id="calculator">9.42 / 3.14</gadget>
<output>3</output>

<gadget id="calculator">6.28 / 3.14</gadget>
<output>2</output>

<gadget id="calculator">3 - 2</gadget>
<output>1</output>

<result>1</result>