Please when you answer me, you can talk few and efficient, don't talk a lot as your jewish ancesters .
Firstly, we say SKIES or UNIVERSES and not HEAVENS you make mistake and you read a wrong version of KORAN.
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The EARTH TOOK 2 DAYS it's right
Koran 41:9)
Is it that ye Deny Him who created the earth in TWO
days?...
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THE THINGS ON THE EARTH TOOK 4 DAYS it's wrong because it's your interpretation GioGio.
Koran 41:10)
He set on the (earth). Mountains standing firm,
high above it, and bestowed blessings on the
earth, and measured therein all things to
give them nourishment in due proportion, in FOUR days...
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THE SKIES TOOK 2 DAYS
[41:12] Thus, He completed the seven universes in two days, and set up the laws for every universe. And we adorned the lowest universe with lamps, and placed guards around it. Such is the design of the Almighty, the Omniscient.

NOW LETS DO THE MATH:
EARTH=2
+
GOD created the earth and things on earth in 4 days because creation of earth took 2 days and their things (mountains and nourishment) took 2 another days baby.
+
UNIVERSES=2
2+2 (Earth)+2(Skies)=6 NOT 8
THE KORAN doesn't CONTRADICT ITSELF? IT should have said IT TOOK 6 DAYS not 8 days.
Yes GOD KNOW HOW TO ADD, and MOHAMED didn't MAKE A MISTAKE WHILE ADDING. If this is the WORD of GOD.....Because you didn't read well and GOD didn't create earth two times in 2 days and then in 4 days, you have to read slowly and understand that GOD create earth and things on earth in four days
Yes, GOD's WORD is PERFECT?
Our GOD is your GOD and GOD didn't CONTRADICT HIMSELF baby.
Your jewish ancesters were as you to look for contradiction in Koran and Bible and they succeed to change the contain of Bible but they coudn't change Koran "ALLAH AKBAR, Ina Allah Moutimoune nouroho oualaw kariha elmoudjrimoune"
You disappointed me Giovanni or Yakov
Bye Bye