Strange RREF (HP 50g)

[peacecalc]

Hello HP 50g friends,

I watched a strange behavier of the RREF command.

If I input the matrix:

Code:

[[ 7.6440528636 7.6440528636 -300. -53.1753303963 ]
 [ -10.192070485 -10.192070485 0. 229.289735683 ]
 [ 61.847 0 0. 8. ]]

and use the RREF command, I get:

Code:

[[ 1. 0. 0. .129351464097 ]
 [ 1. 1.0192070485E14 0. -2.30608094922E15 ]
 [ 1. -.15384615385 4.61538461549E15 -1.82756879024E15 ]]

That is something else as aspected, but if I use a second time RREF I get the aspected form of the matrix:

Code:

[[ 1. 0. 0. 0. ]
 [ 0. 1. 0. -22.6262264632 ]
 [ 0. 0. 1. -.395973237876 ]]

Is there anybody who can explain me the strange behavier? It is not a question of the calculation mode (approxmative or exact)?

Thank you in advance,
sincerely peaceglue