7. If non-negative integers $m, n$ add up with exactly one carry (in decimal), then the ordered pair $(m, n)$ is called "good". The number of all good ordered pairs whose sum is 2014 is $\qquad$ .
7. 195 .

If the carry is in the units place, then the combination of units and tens is $5+9$, $6+8$, $7+7$, $8+6$, $9+5$, a total of 5 kinds; the hundreds place can only be $0+0$, a total of 1 kind; the thousands place is $0+2$, $1+1$, $2+0$, a total of 3 kinds. In this case, there are $5 \times 1 \times 3=15$ pairs.
(1) If the carry is in the tens place, this would cause the hundreds place to also carry, which does not meet the requirement;
(2) If the carry is in the hundreds place, then the units place is $0+4$, $1+3$, $2+2$, $3+1$, $4+0$, a total of 5 kinds; the tens place is $0+1$, $1+0$, a total of 2 kinds; the combination of hundreds and thousands place is $1+19$, $2+18$, ..., $9+11$, $11+9$, $12+8$, ..., $19+1$, a total of 18 kinds. In this case, there are $5 \times 2 \times 18=180$ pairs.
The thousands place cannot carry.
Therefore, the number of ordered pairs is $180+15=195$.