Solver the Following

(789*789*789)+(211*211*211)/(789*789)-(789*211)+(211*211)

= (789) pow 3 + (211) pow 3/(789) pow 2 - (789*211)+ 211 pow 2

we know that
a pow 3 + b pow 3 = (a+b) (a pow 2 - ab + b pow 2)

= 789+211=100