Floating point problem in duration

[awebow]

Describe the bug
Floating point error occurs when call .asWeeks() after call .subtract() with particular values.

To Reproduce

console.log(moment.duration(604800000).asWeeks()); // 1
console.log(moment.duration(1036800000).subtract(5, 'days').asWeeks()); // 0.9999999999999999
console.log(moment.duration(1036800000).subtract(5, 'days').asDays()); // 7

Expected behavior

console.log(moment.duration(604800000).asWeeks()); // 1
console.log(moment.duration(1036800000).subtract(5, 'days').asWeeks()); // 1
console.log(moment.duration(1036800000).subtract(5, 'days').asDays()); // 7

Desktop (please complete the following information):

• OS: Windows 10
• Version Node.js v12.13.1

Moment-specific environment

• The time zone setting of the machine the code is running on
• The time and date at which the code was run
• Other libraries in use (TypeScript, Immutable.js, etc)

Please run the following code in your environment and include the output:

console.log((new Date()).toString())
console.log((new Date()).toLocaleString())
console.log((new Date()).getTimezoneOffset())
console.log(moment.version)

Mon Mar 15 2021 02:34:14 GMT+0900 (GMT+09:00)
2021-3-15 2:34:14
-540
2.29.1

[L0c-Nar]

I also stumbled across the problem. The conversion in milliseconds is obviously affected as well. (See also #5596):
console.log(moment.duration('PT0.002635S').asMilliseconds()); // 2.6350000000000002

Moment.js 2.29.1