Three friends A, B, and C put out equal money to buy the same chocolate. After buying, A and B both took 6 yuan more than C. Therefore, A and B each give C 4 yuan. Please calculate how much each piece of chocolate is?
甲、乙、丙三个小伙伴拿出相等的钱去买同样的巧克力，买好后，甲、乙均比丙多拿了6块．因此，甲、乙各给丙4元．请算一算每块巧克力多少元？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">6 * (2/3)</gadget>
<output>4</output>

<gadget id="calculator">4 / 4</gadget>
<output>1</output>

<gadget id="calculator">2 * 1</gadget>
<output>2</output>

<result>2</result>