$//$ Step $1$: Read number of chairs from input

numChairs $=$ scnr$.$nextInt$()$;

$//$ Step $2$: Assign numTables the same value as numChairs

numTables $=$ numChairs;

$//$ Step $3$: Update numChairs to be the sum of numTables and $2$

numChairs $=$ numTables $+2$;

$//$ Step $4$: Calculate total furniture

totalFurniture $=$ numChairs $+$ numTables;