A machine tool factory manufactures a certain machine tool, each machine uses 1.5 tons of steel, and actually saves 0.25 tons per machine. As a result, 10 more units were manufactured than originally planned. How many machine tools did you plan to build?
机床厂制造某种机床，每台用钢材1.5吨，实际每台节约0.25吨．结果比原计划多制造10台．原计划造机床多少台？
<gadget id="calculator">1.5 - 0.25</gadget>
<output>1.25</output>

<gadget id="calculator">1.25 * 10</gadget>
<output>12.5</output>

<gadget id="calculator">12.5 / 0.25</gadget>
<output>50</output>

<result>50</result>