A measuring cylinder is filled with 400ml of water. After putting 4 glass beads of equal radius, the water level rises to the mark of 500ml. If 1 cubic centimeter of glass beads weighs 1.4 grams, what is the mass of a glass bead? gram?
一个量筒，盛有400毫升的水，放入4颗半径相等的玻璃珠后，水面上升到刻度是500毫升的地方，如果1立方厘米的玻璃珠重1.4克，那么一颗玻璃珠质量是多少克？
<gadget id="calculator">500 - 400</gadget>
<output>100</output>

<gadget id="calculator">100 / 4</gadget>
<output>25</output>

<gadget id="calculator">25 * 1.4</gadget>
<output>35</output>

<result>35</result>