.Net Version 4.8 it doesn't work and .Net core 3.1 thi testcase doesnt work

[simmikava]

toFixed() - JSNumberPrototype.cs

Imported Testcase - NumberTests.cs

1. Assert.AreEqual("1234567890123456768", Evaluate("1234567890123456789 .toFixed(0)"));

2. Assert.AreEqual("77.12739999999999440661", Evaluate("77.1274.toFixed(20)"))

Similar errors in toPrecision() and toString()