Here are the steps in dividing the given decimal.
1. Convert the divisor 0.004 into a non-decimal value by multiplying it by 1000.
[tex]0.004\times1000=4[/tex]In the same way, multiply the dividend 0.86 by 1000 as well.
[tex]0.86\times1000=860[/tex]2. The division now becomes 860 divided by 4. Let's now divide the numbers using short division.
Hence, the quotient of 860 by 4 is 215.
Therefore, 0.86 divided by 0.004 is 215.