human
A DVD can be played 1000 times before it breaks. There are two DVDs in the public library, one has been played 356 times and the other has been played 135 times. How many total times can both DVDs be played before they break?
assistant
How many more times can the first DVD be played? ** 1000-356=<<1000-356=644>>644 times
How many more times can the second DVD be played? ** 1000-135=<<1000-135=865>>865 times
How many total times can both DVDs be played before they break? ** 644+865=<<644+865=1509>>1509 times
#### 1509