Verified answer

50x^2y^7/2x^8 = 25y^7 / x^6

625x^7y^2/10y^4 = 62.5x^7 / y^2

25y^7 / x^6 * y^2 / 62.5x^7

2y^9 / 5x^13

I hope this information was very helpful.