Here's a big I.T. job for you: When the world's largest container shipping firm, Maersk, was hit with NotPetya malware it got to grips the with problem in ten days and installed 4,000 new servers, 45,000 new PCs and 2,500 applications.
"We basically found that we had to reinstall our entire infrastructure,"
Mammoth I.T. Rebuild in 10-Days, Including 4,000 New Servers [itpro.co.uk]
Impressive!