If you want to calculate Equivalent Resistance in Series then only write "s" with brackets and write different resistor values seprated by comma.

For Example

To calculate equivalent resistance in series write equation as follows

s(3,10,5)

If you want to calculate Equivalent Resistance in Parallel then only write "p" with brackets and write different resistor values seprated by comma.

For Example

To calculate equivalent resistance in parallel write equation as follows

p(50,100,500)

If you want to calculate Equivalent Resistance in Series and Parallel then write "s" for series and "p" for parallel with brackets and write different resistor values seprated by comma.

For Example

To calculate equivalent resistance in Series and parallel write equation as follows

s(110,p(220,180))

To calculate equivalent resistance

s(p(s(1,p(1,1)),s(1,1,1,1,p(1,s(1,1,1,p(1,1))))),1,1)