When a natural number is divided by 3, the remainder is 1, when divided by 5, the remainder is 2, and when divided by 7, the remainder is 3. What is the smallest natural number?
一个自然数被3除余1，被5除余2，被7除余3，这个自然数最小是多少．
<gadget id="calculator">3 * 5 * 7</gadget>
<output>105</output>

<gadget id="calculator">105 - 1</gadget>
<output>104</output>

<gadget id="calculator">104 / 2</gadget>
<output>52</output>

<result>52</result>