A total of 123.5 yuan is saved by 41 people in the first preparatory class, and 40 yuan is saved by each of the 40 people in the second preparatory class. How much is the average savings per person in the two classes?
预备一班41人共存123.5元，预备二班40人每人存4元，两班平均每人存多少元？
<gadget id="calculator">40 * 4</gadget>
<output>160</output>

<gadget id="calculator">123.5 + 160</gadget>
<output>283.5</output>

<gadget id="calculator">41 + 40</gadget>
<output>81</output>

<gadget id="calculator">283.5 / 81</gadget>
<output>3.5</output>

<result>3.5</result>