The school plans to plant 108 flowers, which will be distributed to the sixth and fifth grades according to the ratio of 5:4. How many more trees will be planted in the sixth grade than in the fifth grade?
学校计划种花108棵，按5：4分给六年级和五年级完成，六年级比五年级多种多少棵？
<gadget id="calculator">5 + 4</gadget>
<output>9</output>

<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">108 * (5/9)</gadget>
<output>60</output>

<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">108 * (4/9)</gadget>
<output>48</output>

<gadget id="calculator">60 - 48</gadget>
<output>12</output>

<result>12</result>