Calculate the value of the following expression
 
1. ​21​ \(-\) ​5​ \(\times\) ​2​ \(+\) ​12​ \(=\) ​
 
2. ​50​ \(-\) ​14​ \(\times\) ​2​ \(+\) ​52​ \(\div 4\) \(=\) ​