The County Forestry General Factory signed an order for 49,000 Pinus tabulaeformis with a certain unit, and is now preparing to use Pinus tabulaeformis seeds with a germination rate of 98% to raise seedlings. The thousand-grain weight of Pinus tabulaeformis seeds is 0.8 kg. Please help the master worker to calculate, at least how many kilograms of such seeds need to be used to complete the order task?
县林业总厂与某单位签了一笔49000棵油松订单，现准备用发芽率为98%的油松种子育苗，油松种子的千粒重为0.8千克．请帮工人师傅算算，至少需要用多少千克这样的种子育苗才能完成订单任务？
<gadget id="calculator">98 / 100</gadget>
<output>49/50 = around 0.98</output>

<gadget id="calculator">49_000 / (49/50)</gadget>
<output>50_000</output>

<gadget id="calculator">50_000 / 1_000</gadget>
<output>50</output>

<gadget id="calculator">50 * 0.8</gadget>
<output>40</output>

<result>40</result>