Creating and using formulas that include/contain: addition, subtraction, multiplication, division, indices

Writing an algorithm using pseudocode to solve a given problem, including: INPUT/READ, WRITE/PRINT, FOR...NEXT, FOR...NEXT...STEP, IF...ELSE...ENDIF, WHILE...ENDWHILE, REPEAT...UNTIL, CASE...ENDCASE, Comparison operators >, <, =, Arithmetic operators +, -, *, /