Question
Find: $128.9$ $\div$ $1000$

Answer

We have,
$128.9$ $\div$ $1000$
$=\frac{128.9}{1000} =\frac{1289}{1000 \times 10} = \frac{1289}{10000}$ $= 0.1289$
Note that whenever any decimal number is divided by $10, 100$ or $1000$ then the decimal point of that number will be shifted towards the left side as many as there are zeros in the number.

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