The transport company has to send 450 pieces of ammunition to the front line, of which artillery shells account for (5/9) and the rest are grenades. Due to the enemy's ambush, the artillery shells were lost (2/5), and the grenades were only left (3/8). How many ammunition were left when they were delivered?
运输连要将450枚弹药送到前线，其中炮弹占了(5/9)其余都是手榴弹．由于遇上敌军伏击，炮弹损失了(2/5)，而手榴弹只剩下(3/8)，送到时还剩多少枚弹药？
<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">450 * (5/9)</gadget>
<output>250</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">250 * (2/5)</gadget>
<output>100</output>

<gadget id="calculator">250 - 100</gadget>
<output>150</output>

<gadget id="calculator">450 - 250</gadget>
<output>200</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">200 * (3/8)</gadget>
<output>75</output>

<gadget id="calculator">150 + 75</gadget>
<output>225</output>

<result>225</result>