>>> from expenses import highexpense

>>> ld= [[2.0, 3.0, 4.0, 5], [6.0, 7.0, 6.0, 8], [50.0, 10.0, 4.0, 5]]
>>> highexpense(ld, 45)
50.0
>>> ld
[[2.0, 3.0, 4.0, 5], [6.0, 7.0, 6.0, 8], [50.0, 10.0, 4.0, 5]]
>>> ld = [[2.0, 77.0, 10.0], [6.0, 7.0, 6.0, 8.0], [50.0, 12.0]]
>>> highexpense(ld, 45)
77.0
>>> ld
[[2.0, 77.0, 10.0], [6.0, 7.0, 6.0, 8.0], [50.0, 12.0]]
>>> highexpense(ld, 100)
0
>>> ld
[[2.0, 77.0, 10.0], [6.0, 7.0, 6.0, 8.0], [50.0, 12.0]]