機器
abacus
account
accountancy
adding
arithmometer
background
bank
bookkeeping
budget
calculation
calculator
computation
computing
concept
costs
department
diary
economics
economy
education
estimate
estimation
expenses
failure
finance
green
insolvency
money
office
old
planner
plans
poverty
purse
reckoning
retro
savings
score
stationery
tools
vintage
wealth
wooden
workplace