How many different ways are there to change RMB 50 to RMB 1, RMB 2 and RMB 5?
将面值50元的人民币换成1元，2元，5元的人民币，共有多少种不同的换法．
<gadget id="calculator">2 + 4 + 7 + 9 + 12 + 14 + 17 + 19 + 22</gadget>
<output>106</output>

<gadget id="calculator">1 + 1 + 1 + 24 + 9 + 4 + 106</gadget>
<output>146</output>

<result>146</result>