It is known that basketball, football, and volleyball each average 36 yuan, basketball is 10 yuan more than volleyball, football is 8 yuan more than volleyball. How much is each football? Use two methods of solving equations and calculating formulas.
已知篮球、足球、排球平均每个36元，篮球比排球每个多10元，足球比排球每个多8元．每个足球多少元？使用解方程和算式两种方法．
<gadget id="calculator">36 * 3</gadget>
<output>108</output>

<gadget id="calculator">108 - 18</gadget>
<output>90</output>

<gadget id="calculator">90 / 3</gadget>
<output>30</output>

<gadget id="calculator">30 + 8</gadget>
<output>38</output>

<result>38</result>