1. A strategy-maintenance system, comprising: a memory operable to store: a plurality of templates, wherein a template comprises a statement that facilitates writing one or more strategies; and at least one key number, the key number representing customer data, wherein the key number is associated with a key value and at least one strategy; an interface operable to: communicate to a first computer the plurality of templates for presentation on a first graphical user interface; receive a first selection of at least one of the plurality of templates for a strategy, the strategy being associated with the key number, wherein the strategy is operable to calculate the key value associated with the key number based on at least one of the plurality of templates; receive an input value for the strategy; communicate the strategy for execution on a remote machine; and a processor communicatively coupled to the interface and the memory, the processor operable to: determine whether the strategy has received at least one of the first selection and the input value in a time period; in response to determining that the strategy has not received at least one of the first selection and the input value in the time period, retrieve equation data associated with the first selection; determine whether a first template of the plurality of templates contains an error; in response to determining that the first template contains an error, assign a default value for the first template; determine that the first computer has edited the strategy; in response to determining that the first computer has edited the strategy, automatically instruct the interface to communicate the strategy to the second computer; determine whether a second computer has edited the strategy; in response to determining that the second computer has not edited the strategy, instruct the interface to communicate the strategy to the second computer for approval; and execute the strategy to calculate the key value associated with the key number.