Nice work @ThinhDinh . I knew there had to be a roundabout way. I had to do something similar awhile back, but a different scenario. In my case 2 values were joined together to form a number with a decimal, but later needed to split it apart without rounding as well. The whole number is miles and the decimal is ‘chains’, where 80 chains is equal to 1 mile. I had converted the 80 chains to 10 based decimal so we could sum total chains and let it also increment the miles. Then later separate the whole number (miles) and decimal (chains) so I could convert the decimal form of chains back into it’s own whole number form by multiplying it by 80.
Looks to be very similar, but in my case I think I rounded the original value, then created a second value of the rounded number - 1. Then I subtracted the rounded value from the original number. If negative (due to rounding up), then I used the column with the number -1. If positive, then I used the original rounded column since it rounded down. That gave me the final whole number value and I subtracted that from the original value to get the chains decimal value by itself.