Trying to figure how long various coins will take to solo. But the formula I found, and the numbers I am getting do not make sense. Formula I found and seems to be the formula posted all over, but the results I am getting do not make sense.

network hashrate / personalrate * blocktime                 = time to find a block

Lets take DGB sha-256 for example here.

Network hashrate = 1.2P
My hasrate = 13.5 TH
Blocktime = 75 seconds

So convert PH/s to TH/s

1.2 * 1000 = 1200

1200 / 13.5 = 88.9
88.9 * 75 = 6666.667 seconds

Which comes out to 111 minutes to find a block. Which does not seem right at all. I am doing something wrong here.

Thanks for any help.