A piece of tin-iron alloy weighs 45 kilograms, and the content of iron accounts for about 60%. How many kilograms of iron are in this alloy?
一块锡铁合金重45千克，其中铁的含量约占60%，这块合金里约有铁多少千克？
<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">45 * (3/5)</gadget>
<output>27</output>

<result>27</result>