I actually skipped the item mentioned in the comment, so I am adding it here. At the very least, it will help future visitors.
As you correctly calculated 9, the addition 1056.074, which is [(10 4 ) - (1 * (10 -3 ))] - 1056.074 = 9999.999 - 1056.074 = 8943.925 .
, 10 , 1 ( ) LSB, , 10 .
, 10 = 9 + 0,001 ( 1 LSB) = 8943.926.