Example: 2952÷84.
First strike the number to be divided (2952) according to the large figures on the keys, which will cause it to show in the register as above.
The divisor (less 1) is always struck according to the small figures on the key tops. [1]Therefore, we place our fingers on the small 8 and on the small 3 over the units and tens of 295 in the register as shown above, because the two left hand figures of the dividend (29) represent an amount smaller than the divisor (84) otherwise we would place the fingers on keys small 8 and small 3 over the 29.