MySQL compatibility: DIV and MOD operators

https://dev.mysql.com/doc/refman/8.0/en/arithmetic-functions.html

**Use case**
`a DIV b` - the same as `intDiv(a, b)`
`a MOD b` - the same as `modulo(a, b)`