Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 87d1b46e86fb8baeed85fabf53d4446f4450c7fe93c02f7634ffeec6dad658d2:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^