Given \frac{334 * 245 * 239}{ 419 * 87}. 334 * 245 * 239 = 1,95,57,370 419*87 = 36, 453 \frac{334 * 245 * 239}{ 419 * 87} = 536.509204 = 5.4* 10^2 (correct answer) This is the way to solve this question. How you get the answer 4060838.162. Failure cases: 1) May be you didn't multiply the terms 419 and 87. 2) May be you divided the numerators by one term only either 419 or 87. 3) May be you divided by one term (419 or 87). After this, you multiplied with the remaining term. Just check yourself what mistake you have done.