機器
abacus
accountancy
accounting
adding
ancient
antique
arithmometer
background
bank
bookkeeping
budget
business
calculation
calculator
close
computation
computing
concept
costs
department
economics
economy
education
estimate
estimation
expenses
failure
finance
insolvency
mathematics
money
obsolete
office
old
plans
poverty
purse
reckoning
retro
savings
score
scratched
stationery
up
vintage
wealth
wood
wooden
workplace