5 [ "123" ] [ "123" 2 decimal-places ] unit-test
6 [ "123.12" ] [ "123.12" 2 decimal-places ] unit-test
7 [ "123.123" ] [ "123.123" 5 decimal-places ] unit-test
8 [ "123" ] [ "123.123" 0 decimal-places ] unit-test
9 [ "05" ] [ "5" 2 digits ] unit-test
10 [ "666" ] [ "666" 2 digits ] unit-test