I4.3 Given that there are $R$ odd numbers in the digits of the product of the two $Q$-digit numbers 1111...11 and $9999 \ldots 99$, find the value of $R$.
Note that $99 \times 11=1089 ; 999 \times 111=110889$.
Deductively, $999999999999 \times 111111111111=111111111110888888888889$ $R=12$ odd numbers in the digits.