Dreame Robot Vacuum: Total clean time is wrong - minutes are interpreted as hours
**Describe the bug**
Fresh install of a Dreame vacuum robot. The robot did its very first test run, which took about 10 minutes. The Xiaomi Home App shows a total runtime of 10 minutes. All is good so far.
During restart of Homebridge, the Log tells "Total clean time: 10 hours." instead of 10 minutes. 

**Expected behavior**
The Homebridge Log should correctly report "Total clean time: 10 minutes."

**Your config.json**
{
                    "name": "NAME",
                    "ip": "192.168.178.200",
                    "token": "TOKEN",
                    "deviceId": "ID",
                    "model": "dreame.vacuum.r2228o",
                    "pollingInterval": 10,
                    "deepDebugLog": false,
                    "buzzerControl": true,
                    "ledControl": true,
                    "childLockControl": true,
                    "modeControl": false
                }
**Debug log**
[3/23/2023, 10:20:12 AM] [homebridge-miot] [NAME] Device found! Setting up miot device from local connection!
[3/23/2023, 10:20:12 AM] [homebridge-miot] [NAME] Connected to device: dreame.vacuum.r2228o
[3/23/2023, 10:20:12 AM] [homebridge-miot] [NAME] Doing initial property fetch.
[3/23/2023, 10:20:12 AM] [homebridge-miot] [NAME] Main brush left time: 299 hours.
[3/23/2023, 10:20:12 AM] [homebridge-miot] [NAME] Main brush life level: 99%.
[3/23/2023, 10:20:12 AM] [homebridge-miot] [NAME] Filter life level: 99%.
[3/23/2023, 10:20:12 AM] [homebridge-miot] [NAME] Total clean time: 10 hours.
[3/23/2023, 10:20:12 AM] [homebridge-miot] [NAME] Total cleaned: 1 times.
[3/23/2023, 10:20:12 AM] [homebridge-miot] [NAME] Total clean area: 10 m2.
[3/23/2023, 10:20:12 AM] [homebridge-miot] [NAME] Starting property polling.
