in console NSDictionary shows @"subtotal" : (no summary)

code inside of Main:

NSDictionary *orderDict = @{ @"burgers": @5, @"shakes": @3, @"customers": @4, @"isTakeOut": @NO, @"subtotal": @0.0, };

    float burgerPrice = 4;
    float shakePrice = 3;
    float subtotal;

    subtotal = (burgerPrice * [[orderDict valueForKey:@"burgers"]intValue]) + (shakePrice * [[orderDict valueForKey:@"shakes"]intValue]);

    NSMutableDictionary *outputDict = [NSMutableDictionary dictionaryWithDictionary:orderDict];

    [outputDict setValue:@(subtotal) forKey:@"subtotal"];

Console result:

burgerPrice float 4 subtotal float 29 orderDict __NSDictionaryI * 5 key/value pairs 0x0000000100400940 [0] (null) @"shakes" : (int)3
[1] (null) @"customers" : (int)4
[2] (null) @"subtotal" : (no summary)
key __NSCFConstantString * @"subtotal" 0x00000001000010d0 value __NSCFNumber * 0x57 0x0000000000000057 NSNumber NSNumber NSValue NSValue NSObject NSObject
isa Class 0x0 [3] (null) @"isTakeOut" : @"0" [4] (null) @"burgers" : (int)5 shakePrice float 3 outputDict __NSDictionaryM * 5 key/value pairs 0x0000000100400b30