speed of light: ${c} = {{{299792458}} \cdot {{{\frac{1}{s}} {m}}}}$
Gravitational constant: ${G} = {{{6.67408\cdot{10^{-11}}}} \cdot {{\frac{{m}^{3}}{{{kg}} \cdot {{{s}^{2}}}}}}}$
reduced Planck constant: ${ℏ} = {{{1.054571817\cdot{10^{-34}}}} \cdot {{{\frac{1}{s}} {{{kg}} \cdot {{{m}^{2}}}}}}}$
sphere area for radius: ${A} = {{{4}} {{π}} \cdot {{{r}^{2}}}}$
sphere area for radius: ${A} = {{{12.566370614359}} {{{r}^{2}}}}$
sphere radius for area: ${r} = {{{0.28209479177388}} {{\sqrt{A}}}}$
Bekenstein-Hawking entropy for surface area: ${S} = {\frac{{{{c}^{3}}} {{A}}}{{{4}} {{G}} {{ℏ}}}}$
Bekenstein-Hawking entropy for surface area: ${S} = {\frac{{{9.5704982581295\cdot{10^{68}}}} {{A}}}{{m}^{2}}}$
Bekenstein-Hawking entropy for sphere radius: ${S} = {\frac{{{1.2026642807573\cdot{10^{70}}}} {{{r}^{2}}}}{{m}^{2}}}$
entropy of a black hole with surface area of a sphere with radius of 0.7 m: ${S} = {5.893054975711\cdot{10^{69}}}$
surface area for Bekenstein-Hawking entropy: ${A} = {{{1.0448776782866\cdot{10^{-69}}}} {{S}} {{{m}^{2}}}}$
sphere radius for Bekenstein-Hawking entropy: ${r} = {{{9.1185922001615\cdot{10^{-36}}}} {{m}} {{\sqrt{S}}}}$
surface area of a black hole with an entropy of $10^{15}$: ${A} = {{{1.0448776782866\cdot{10^{-54}}}} {{{m}^{2}}}}$
the Schwarzschild-radius of a black hole with an entropy of $10^{15}$: ${r} = {{{2.8835520406756\cdot{10^{-28}}}} {{m}}}$
Schwarzschild radius for mass: ${r} = {\frac{{{2}} {{M}} {{G}}}{{c}^{2}}}$
Schwarzschild radius for mass: ${r} = {{\frac{1}{kg}} {{{1.4851830972213\cdot{10^{-27}}}} {{M}} {{m}}}}$
Bekenstein-Hawking entropy for the Schwarzschild radius of a given mass: ${S} = {\frac{{{26527993861810708}} {{{M}^{2}}}}{{kg}^{2}}}$
Schwarzschild radius of a black hole formed from 0.4 kg of weight ${r} = {{{5.9407323888851\cdot{10^{-28}}}} {{m}}}$
Bekenstein-Hawking entropy for sphere with radius the Schwarzschild radius of a black hole formed from 0.4 kg of weight: ${S} = {4244479017889714}$

estimated radius of the universe: ${r} = {{{8.8\cdot{10^{26}}}} {{m}}}$
Bekenstein-Hawking entropy of a sphere of this radius: ${S} = {9.3134321901849\cdot{10^{123}}}$
estimated mass of "ordinary matter" in the universe: ${M} = {{{1.5\cdot{10^{53}}}} {{kg}}}$
Schwarzschild radius of this mass: ${r} = {{{2.2277746458319\cdot{10^{26}}}} {{m}}}$
Bekenstein-Hawking entropy of Schwarzschild radius of this mass: ${S} = {5.9687986189074\cdot{10^{122}}}$
estimated total mass of the universe: ${M} = {{{3.0612244897959\cdot{10^{54}}}} {{kg}}}$
Schwarzschild radius of this mass: ${r} = {{{4.5464788690447\cdot{10^{27}}}} {{m}}}$
Bekenstein-Hawking entropy of Schwarzschild radius of this mass: ${S} = {2.4859636063754\cdot{10^{125}}}$