Next time it's good weather take a look at sun and notice that using talent mile units you can tell how far it is and what mass it is just from there being 365 days in a year.
Light goes 107 miles a minute and earth goes a tenthousandth of that so 103 or 1000 miles a minute. 365/2pi is 58 days and there are 1600 of our minutes to a day, so 93,000 minutes is the time it takes earth to travel the length of the radius of its orbit. How far does earth go in 93 thousand minutes? It goes 93 million miles so the distance to sun is 93 million miles. And light takes 9.3 minutes to get here from it.
The mass of a body like the sun is the distance × orbitspeed squared divided by G. The distance times the squared orbit speed is 93 million miles × (1000 miles/minute)2 which comes to 93 × 1012. Then dividing by G's value of 10-15 gives 93 × 1027. That is in talents. So 93 × 1027 talents is the mass of the sun.
Knowing that earth's orbit speed is a tenthousandth of light's, all you really need is the 93 you get from the calendar—the number of days in a year tells you the distance and mass of the sun.
The diameter of a black hole with same mass as sun would be 4 × 0.93 miles, which is 3.7 miles and that 3.7 miles is also the light-bending parameter for the sun. Technical things that ride in on the same 93 you get from the calendar. And this is a tedious mess in metric because of a bunch of ugly arbitrary conversion factors. It would be a headache to do the metric calculations of the same things for comparison.