If the social security base in Quzhou, Zhejiang is 16,800 yuan, the specific payment amounts for different types of insurance are as follows:

1. Endowment Insurance: The unit contribution ratio is 14%, so the unit pays ​
   ×14%=
   yuan; the individual contribution ratio is 8%, so the individual pays ​
   ×8%=
   yuan.

2. Medical Insurance: The unit contribution ratio is 8%, so the unit pays ​
   ×8%=
   yuan; the individual contribution ratio is 2%, so the individual pays ​
   ×2%=
   yuan.

3. Unemployment Insurance: The unit contribution ratio is 0.5%, so the unit pays ​
   ×0.5%=
   yuan; the individual contribution ratio is 0.5%, so the individual pays ​
   ×0.5%=
   yuan.

4. Work - related Injury Insurance: The unit contribution ratio varies according to industry risks, with a range of 0.2% - 1.9%. Taking 0.2% as an example, the unit pays ​
   ×0.2%=33.6
   yuan, and individuals do not contribute.

5. Maternity Insurance: The unit contribution ratio is 0.5%, so the unit pays ​
   ×0.5%=
   yuan, and individuals do not contribute.

In summary, when the social security base in Quzhou, Zhejiang is 16,800 yuan, the total amount of social security contributions paid by the unit per month is ​

是基于提供的信息，若实际政策有变动，结果可能不同。你可前往衢州市人力资源和社会保障局官网，或拨打当地社保服务热线 12333，查询最新政策。