When a number is divided by 7, the resulting quotient is divisible by both 3 and 5. What is the smallest number.
一个数除以7，所得的商，既能被3又能被5整除．这个数最小是多少．
<gadget id="calculator">7 * 3 * 5</gadget>
<output>105</output>

<result>105</result>