An example calculation would be...
take NSM P/E ratio = 59.97 and multiply by earnings per share to get the Market value per share.
59.97 x EPS = P
EPS in this case would be the NSM earnings of roughly $0.30 per share divided by ratio post dilution.
416,012,872 is the amount of shares proposed to be registered for NSM conversion + 206,168,000 for rough amount of total outstanding shares post merger dilution. Round it off to 622 mil for the purposes of this example
622/97.8 = 6.35
Take $0.30/6.35 = $0.047
Take the 59.97 x 0.047 = $2.82 pps(rounded up).
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If it was the WMIH P/E ratio
142 x 0.047 = $6.674 pps
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Of course using any of the current P/E ratios is pointless.
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Last example
Assuming $1.83 PPS (post merger valuation by KBW)/0.047 eps (post dilution) = 38.936 P/E ratio