~$\dfrac{2022}{2021-\dfrac{2020}{2019-\dfrac{2018}{5-\dfrac{4}{3-\dfrac{2}{1}}}}}$$=$． 
Overseas Competition->Knowledge Point->Calculation Modules->Fractions->Complex Fractions
$$3- \frac{2}{1}=1$$  $$5- \frac{4}{1}=1$$  $$\cdots \cdots$$  $$2022- \frac{2021}{1}=1$$  $$\frac{2022}{1}=2022$$. 