poor tests

Keep the values to 2 decimal places.

How to keep 2 decimal places? round, floor, or ceil?

I used ceil, because in testcase1:

splitTheBill(100, 2, 1), '45.45,54.54'

I got two decimal numbers:

45.45454545454545 54.54545454545454

But I failed at testcase3:

Test.assertEquals(splitTheBill(59, 4, 1), '14.05,16.86');

I got two decimal numbers:

14.047619047619047 16.857142857142858

Expected: '14.05,16.86', instead got: '14.04,16.85'