test: add test that / performs true division, not floor division
#25275
| Job | Run time |
|---|---|
| 5m 30s | |
| 30s | |
| 3m 31s | |
| 5m 8s | |
| 3m 26s | |
| 5m 54s | |
| 3m 0s | |
| 4m 7s | |
| 10m 36s | |
| 5m 35s | |
| 10m 31s | |
| 6m 22s | |
| 11m 3s | |
| 5m 25s | |
| 1h 20m 38s |