The average of the four numbers A, B, C, and D is 75. The average of A and B is 2 more than the average of C and D. A is 90. What is B?
A、B、C、D四个数平均数是75，A与B的平均数比C与D的平均数多2，A是90，B是多少？
<gadget id="calculator">75 * 4</gadget>
<output>300</output>

<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<gadget id="calculator">300 + 4</gadget>
<output>304</output>

<gadget id="calculator">304 / 2</gadget>
<output>152</output>

<gadget id="calculator">152 - 90</gadget>
<output>62</output>

<result>62</result>