Mr Cooper Group Inc fka COOP

[Civil War General]

That last paragraph:
“
As of December 31, 2017, the receivership’s total assets increased from the prior quarter ending September 30, 2017 by approximately $19 million. This amount includes an upward adjustment of $15.5 million attributable to investment interest earned by the receiver on its cash held in the National Liquidation Fund (NLF). This adjustment was made to reflect WAMU’s reallocated pro rata share of the total investment earnings of the NLF as calculated on a daily basis from the receivership’s inception.”

What amount of cash would earn interest of $15.5 million in 3 months with the interest rate in July, August, and September in 2017?