What is the minimum cost of crashing the following project at Sawaya Robotics by $4$ days?

$\backslash$table$[[$ACTIVITY$,\backslash$table$[[$NORMAL$],[$TIME $($DAYS$)]],\backslash$table$[[$CRASH$],[$TIME $($DAYS$)]],\backslash$table$[[$NORMAL$],[$COST$]],\backslash$table$[[$CRASH$],[$COST$]],$IMMEDIATE PREDECESSOR$($S$)],[$Design $($A$),6,5,200,325,-],[$Wiring $($B$),5,4,1,000,1,200,-],[$Chip install $($C$),4,2,600,750,-],[$Software $($D$),4,2,1,000,1,350,$A$,$ B$],[$Testing $($E$),7,4,1,100,1,775,$C$]]$

The minimum cost of crashing the following project at Sawaya Robotics by $4$ days is $$,($enter your response as a whole number$).$