Improving FIX mode

[Pyjam]

It depends on the field of application, but for example, if a notary splits $0.01 between 3 heirs, that's not $3.33 E-03 for each, but $0.00 for each (and the rest for him).

By the way, this is how it works on HP-12C:
FIX 2
0.0055 ENTER → 0.01
10 ÷ → 0.001
10 ÷ → 0.0001
…
10 ÷ → 0.000000001 (reach the limit of the screen)
10 ÷ → 5.500000 – 11

FIX 2
0.049 ENTER → 0.05
10 ÷ → 0.005
10 ÷ → 0.0005
…
10 ÷ → 0.000000005 (reach the limit of the screen)
10 ÷ → 4.900000 – 10