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The JDBC layer is parsing the value to `BigDecimal` correctly but it appears that Exposed is rounding the precision to that of the original column.

```fun &lt;T: BigDecimal?&gt; ExpressionWithColumnType&lt;T&gt;.alterScale(additional: Int): ExpressionWithColumnType&lt;T&gt; {
    val columnType = (columnType as DecimalColumnType)
    return castTo(DecimalColumnType(columnType.precision + additional, columnType.scale + additional))
}```

I had add new `withScale` on DivideOp function. Will be avalilable on the next release. You could <https://github.com/JetBrains/Exposed/blob/3ad9b689bc6da62a7abd9ce007a92dd48c890313/exposed-tests/src/test/kotlin/org/jetbrains/exposed/sql/tests/shared/dml/ArithmeticTests.kt#L33|check test> how to use it.