UC /returning to work

Hi Ladies, I'm trying to work out if it's possible for me to leave work and stay home with LO. However sleep deprivation has kicked in and I can't do maths 😅 We're entitled to £905.52 before deductions. We can earn £673 before it will then effect our entitlement. Anything earnt after that they of course take 55p away from UC for every £1 you earn through working. My partner earns around £2000 pm through his job. What will we be left with UC wise after deductions? Thank you!