de methodine

0.42832 / 18342 \ = ?

****ft the point as far right until the division produces a single digit
4283.2 / 18342 \ = 4 (4)

then ****ft one position left for each subsequent digit

18342 - 17132.8 = 1209.2

428.32 / 1209.2 \ = 2 (42)

1209.2 - 856.64 = 352.56

42.832 / 352.56 \ = 8 (428)

352.56 - 342.656 = 9.904

4.2832 / 9.904 \ = 2 (4282)

9.904 - 8.5664 = 1.3376

and, finally

0.42832 / 1.3376 \ = 3 (42823)

and you could have as many decimals as you care to calculate. I didn't,
and
I shure hope it isn't repetitive, forward or backslash.