Master Zhang produced a total of 600 large screws, which is 2 boxes less than the production of small screws. It is known that each box contains 50 small screws and each box contains 60 large screws. How many small screws does Master Zhang produce?
张师傅共生产大螺丝600颗，比生产的小螺丝少2盒，已知每盒小螺丝装50颗，每盒大螺丝装60颗，张师傅生产小螺丝多少颗？
<gadget id="calculator">600 / 60</gadget>
<output>10</output>

<gadget id="calculator">10 + 2</gadget>
<output>12</output>

<gadget id="calculator">12 * 50</gadget>
<output>600</output>

<result>600</result>