Maths (680 × 680 + 320 × 320 - 680 × 320) / (680 × 680 × 680 + 320 × 320 × 320) = ?

(680 × 680 + 320 × 320 - 680 × 320) / (680 × 680 × 680 + 320 × 320 × 320) = ? - - (680 × 680 + 320 × 320 - 680 × 320) / (680 × 680 × 680 + 320 × 320 × 320) = ?  Maths in hindi,  number system  1/ 1000 question answers in hindi pdf   360 questions in hindi, Know About 1000 Maths online test Maths notes in hindi quiz book     1/360