The master and the apprentice produce a batch of parts. The ratio of the number of parts produced by the two is 5:3. It is known that the apprentice produces 150 parts and how many parts are produced by the master.
师徒两人生产一批零件，两人生产个数的比是5：3，已知徒弟生产150个，师傅生产多少个．
<gadget id="calculator">5 / 3</gadget>
<output>5/3 = around 1.666667</output>

<gadget id="calculator">(5/3) * 150</gadget>
<output>250</output>

<result>250</result>