First, the clues:
Argon is about 1%?
Argon makes up just under 1% of our atmosphere. The word we want here is AIR.
One-half of twelve divided by zero equals zero?
One half of "twelve" is "lve" with a zero (or O) inserted gives us LOVE, which is also a score of zero in tennis.
Repeat repeat lost lost primarily primarily with with skirts skirts?
Not sure on the wordplay for this one, but the answer is ITERATE. (I worked backwards from the alphametic to get this one, after spotting that S must be 0).
Now for the division:
With the answers filled in we have:
AIR
-------
LOVE|ITERATE
ITSSE
-----
ERLT
LOVE
----
IAMVE
IEITS
-----
LTAE
Starting with the final subtraction (IAMVE - IEITS = LTAE):
From the units we have E-S = E, so S must be 0.
And from the second multiplication (I * LOVE = LOVE) we have I = 1.
Then from the first subtraction (1TERA - 1T00E = ERL), there is no borrow from the tens/hundreds, so A-E = L. (Equivalently E+L = A).
And with 0 and 1 taken, E+L is at least 2+3. So A >= 5.
A1R
-------
LOVE|1TERATE
1T00E
-----
ERLT
LOVE
----
1AMVE
1E1T0
-----
LTAE
From the first multiplication (A * LOVE = 1T00E), in the units we have A * E = E (mod 10). So either:
A is odd and E = 5. (So A = 7 or 9, and L = 2 or 4.)
Or A = 6 and E is even. (So E = 2 or 4, and L = 4 or 2.)
Continuing with the first multiplication, we now have A >= 6 and the product starts with a 1. So L is at most 3.
So L = 2.
(And either E=4, A=6 or E=5, A=7.)
From the second subtraction (ERLT - 2OVE = 1AMV), in the thousands we have E - 2 - borrow = 1.
So E = 4, and A = 6.
61R
-------
2OV4|1T4R6T4
1T004
-----
4R2T
2OV4
----
16MV4
141T0
-----
2T64
Now, look at the final subtraction (16MV4 - 141T0 = 2T64) again.
There are no borrows from the known columns. If there is no borrow from the hundreds, we have V-T = 6 and M-1 = T. But with 0,1,2,4,6 already taken, there are no suitable numbers left.
So there must be a borrow, so V+10 - T = 6 and M - 2 = T. Or T = V+4 and M = T+2.
From the available digits, the only option is V = 3, T = 7 and M = 9.
Finally from the second subtraction, we have 4R27 - 2O34 = 1693.
So R = 5 and O = 8
615
-------
2O34|1745674
17004
-----
4527
2834
----
16934
14170
-----
2764
And finally, the word/phrase we get by putting the letters in order is:
SILVER ATOM