Three people, A, B, and C, have an average weight of 60kg. The average weight of A and B is 3kg more than that of C, and A is 3kg heavier than C. What is the weight of B?
甲、乙、丙三人，平均体重60kg，甲与乙的平均体重比丙的体重多3kg，甲比丙重3kg，则乙的体重为多少kg？
<gadget id="calculator">60 * 3</gadget>
<output>180</output>

<gadget id="calculator">180 - 3 - 3</gadget>
<output>174</output>

<gadget id="calculator">1 + 1 + 1</gadget>
<output>3</output>

<gadget id="calculator">174 / 3</gadget>
<output>58</output>

<gadget id="calculator">58 + 3</gadget>
<output>61</output>

<result>61</result>